
245 S.E.2d 417 (1978)
36 N.C. App. 690
Stanislaw A. G. SIEDLECKI
v.
R. D. POWELL and Products International, Ltd.
No. 7710SC386.
Court of Appeals of North Carolina.
June 20, 1978.
*419 Bailey, Dixon, Wooten, McDonald & Fountain by Wright T. Dixon, Jr., John N. Fountain and Richard G. Chaney, Raleigh, for plaintiff.
Poyner, Geraghty, Hartsfield & Townsend by Marvin D. Musselwhite, Jr. and Cecil W. Harrison, Jr., Raleigh, for defendants.
BROCK, Chief Judge.
Defendants bring forward 28 assignments of error on appeal, six of which are argued in their brief in four arguments. The rest are deemed abandoned. App.R. 28(a).
We first discuss defendants' second argument based upon assignments of error numbers 26 and 27, by which defendants contend that the trial court erred in awarding damages to plaintiff based upon the value of a share of stock of "new" Products International as of 30 November 1973. Defendants contend that damages, if any, should be measured as of 17 March 1971, which is the date plaintiff tendered demand for 15% of the stock of "old" Products International. We disagree.
This is an action for damages for breach of contract. "As a general rule, the damages upon breach of contract are to be measured as of the date of the breach." 22 Am.Jur.2d, Damages, § 52, p. 81. The trial court departed from the general rule for the reasons set out in the following findings of fact:
"30. No books were kept after November 30, 1970, which accurately reflect the separate operations of the merging corporations and none were kept after the merger from which the separate activity of the original Products International, Ltd. and the original Golf Carts Incorporated can be identified."
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"40. From the books and records of the Corporation it is not possible to determine the relative value of a share of stock of Products International, Ltd. compared with a share of Golf Carts Incorporated as of 17 March 1971 (the date of *420 demand) this is in no way due to any act or omission of the plaintiff but, is on the other hand, entirely due to the acts of the defendant Powell in causing all records to be consolidated and no value to be placed on the import contract of September 1970. R. D. Powell was fully aware of the claim of the plaintiff at the time of merger and was well aware that the exclusive import contract had a substantial value."
(Defendants are deemed to have abandoned their assignments of error based upon exceptions to these findings of fact, as noted supra.) In light of these findings, defendants will not be heard to complain of the trial court's action determining the value of the stock at issue based upon the consideration received by defendants from a sale of the assets of the merged corporation subsequent to their breach of the contract with plaintiff. We think it would be unconscionable to apply the rule for measurement of damages urged upon us by defendant. To do so would impose upon plaintiff a burden of proof made impossible by defendants' deliberate conduct relating to their accounting procedures. There is considerable authority, in cases dealing with breach of contract to deliver stocks or bonds or for conversion of stocks or bonds, for measuring damages based on valuation at a time subsequent to the commission of the wrongful act. See annot. 161 A.L.R. 316, et seq. (1946). Furthermore, in at least one jurisdiction in cases involving conversion of stock, damages have been measured by the consideration paid to the wrongdoer by a subsequent purchaser of the converted stock. See Topzant v. Koshe, 242 Wis. 585, 9 N.W.2d 136 (1943); Price v. Ross, 62 Wis.2d 335, 214 N.W.2d 770 (1974) (failure to assign franchise agreement); see also Frey v. Frankel, 443 F.2d 1240 (10th Cir. 1971). That the instant action was for breach of contract rather than conversion is an insignificant distinction for purposes of this discussion. The subject of the action in either case is the failure to deliver stock. In the case sub judice, the ascertainment of damages at the time of defendants' wrongful conduct was rendered impossible by defendants, through no fault of the plaintiff; this, in our opinion, warranted the damage measurement adopted by the trial court. Defendants' assignments of error numbers 26 and 27 are overruled.
In their first argument, covering assignments of error numbers 19 and 27, defendants challenge the trial court's finding of fact number 34 and the conclusion of law based thereon.
In finding of fact number 33, the validity of which is not challenged by this appeal, the court found that the 1973 liquidation of "new" Products International was for a total sum of $1,187,095.00. In the challenged finding of fact number 34, the court found as follows:
"34. $386,116.00 of the above amount represented physical assets owned and Golf Carts leases and sales originally belonging to Golf Carts, Inc. prior to the merger. $800,979.00 represented carts in inventory and the import contract and exclusive sales agreement originally held by Products International before the merger."
Based upon findings of fact numbers 33 and 34, the trial court concluded as a matter of law that 67% of the total sales price ($800,979 out of $1,187,095) was derived from the sale of assets of "old" Products International. Defendants contend that finding of fact number 34 is not supported by any evidence which was before the trial court, and thus does not support the court's conclusion of law.
Finding of fact number 34 essentially concerned an allocation of the assets of "new" Products International between its pre-merger predecessors, Golf Carts and "old" Products International, as a means of ascertaining the component value of "old" Products International in "new" Products International since, as further found by the court, plaintiff was entitled to recover 15% of the value of the stock in "old" Products International by virtue of his contract with the defendant Powell. The $800,979 figure represented the gross price paid by Pezetel for assets purchased from "new" Products International.
*421 Plaintiff's expert witness, Dr. Thomas F. Keller, testified as to several methods of apportioning the assets between the two corporations, one of which used the gross sale figure, which was the method adopted by the trial court. Dr. Keller testified in part as follows:
"Based on [financial records and information such as tax returns, financial statements, accountant's working papers, etc.], I made a study as to the value of Golf Carts, Inc., Products International, and the two components of the merged corporation, Products International, Ltd. The data is co-mingled and it becomes very difficult to separate the two corporations after November 30, 1970, but using some of Mr. Phillips' [defendants' accountant] working papers and data supplied by the defendant, I have indeed made some studies attempting to show a breakdown, at least a feasible breakdown of the assets of the corporation. The date I have used, the terminal date, when we have a value of the corporation, is shown on a balance sheet on a tax return of November 30, 1973, which is the date the corporation held its assets, cash and accounts receivable, and some liability.
I have also made studies as to the portion between Golf Carts and Products International in the merged corporation. I have attempted to divide the consolidated or combined corporation into two parts, again using the data provided essentially by Mr. Phillips. I have attempted to allocate the corporation, the two parts, using two methods. I have also attempted to use stock values for some of the trades that have taken place between the corporation and certain stockholders as evidence of value at particular dates, in an attempt to arrive at a value number in addition to a book value number."
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"Going back to my two methods of apportioning the assets between the two corporations, in one case we had the sale of certain assets of the combined corporation to Eddietron. Some other assets were sold to Pezetel. My recollection is that the sale to Eddietron was during the year 1972 and constituted a sale of a building, some rental carts, or contracts which were for rental carts with certain customers of Golf Carts, Inc. I have seen the sale to Pezetel, which was apparently an inventory of the new golf carts on hand at the date of the sale, plus certain parts and other miscellaneous assets. I have used these two sales prices as an estimate of the value let me change the word "value" of the part of the assets that were attributable to Golf Carts on one hand and the part of the assets that were attributed to Products International on the other hand. I have asserted that if, in fact, these two values did reflect the assets as of the date of their respective sales, that we could then divide the total remaining assets composed of cash and accounts receivable on a proportionate basis between these two component parts. The sale to Pezetel was in the approximate dollar value of $800,000. That would be a gross sale figure as far as I could tell."
Defendants contend that Dr. Keller erroneously assumed that the assets sold to Pezetel were exclusively attributable to "old" Products International. In this regard, we note the witness' observation relating to the co-mingled financial data which rendered separation of the merged corporation very difficult; furthermore, we note once again the trial court's findings of fact relative to the deficiencies in defendants' bookkeeping, especially finding of fact number 30, supra. Dr. Keller's allocation of assets between the two pre-merger corporations was an estimate based upon his examination of defendants' financial records. Based upon the circumstances, we hold that this evidence supports the trial court's finding of fact number 34. The challenged finding of fact, supported as it is by evidence in the record, is conclusive on appeal. Blackwell v. Butts, 278 N.C. 615, 180 S.E.2d 835 (1971). Defendants' assignment of error numbers 19 and 27 are overruled.
Defendants next assign as error the introduction into evidence of a 1974 escrow agreement between the defendant corporation *422 and several of its stockholders which established a fund for payment of the damages, if any, which might arise from the instant litigation. By its terms, the escrow was established pursuant to a purchase of stock by the defendant corporation from its stockholders and was funded by part of the purchase price of each share. Defendants contend that the agreement was an insurance fund, evidence of which was inadmissible. We disagree.
Evidence of insurance coverage is admissible if it has some probative value other than to show the mere fact of its existence. 1 Stansbury's N.C. Evidence (Brandis Rev. 1973) § 88, p. 274. The escrow agreement was admissible as evidence of the value of the defendant corporation's stock. Furthermore, as argued by the plaintiff, it was admissible to show the bias of defendants' witness Clem Sharek, a party to the agreement. Id. This assignment of error is overruled.
In their final argument, defendants assign error to the trial court's order setting an expert witness fee for plaintiff's witness, Dr. Keller, to be taxed as part of the costs in the action. This assignment of error has merit.
G.S. 7A-314(a) and (d) allow the court to set an expert witness fee. As interpreted by our Supreme Court in State v. Johnson, 282 N.C. 1, 191 S.E.2d 641 (1972), the statute requires that a witness must be under subpoena before he or she is entitled to compensation. Under this interpretation, the trial court had no authority to order the fee on behalf of Dr. Keller, who admittedly did not testify in obedience to a subpoena. Plaintiff's argument that the provisions of G.S. 7A-314(a), allowing fees for a witness "under subpoena, or bound over, or recognized" should be read in the alternative, is persuasive; however, we are bound by the decision of the Supreme Court. We hold, therefore, that the order allowing the expert witness fee must be reversed.
The judgment of the trial court awarding damages to plaintiff for breach of contract is affirmed. The order as to expert witness fees for plaintiff's expert is reversed.
Affirmed in part, reversed in part.
VAUGHN and ERWIN, JJ., concur.
