806. Computation of benefits received by representee.

For the purpose of calculating damages, the value of the property, rights or interests received by the representee1 under the contract means their real and actual value, to be determined by reference to the evidence adduced2, and, in the case of marketable or saleable securities, without regard to market or current prices, which may be shown to have been manufactured by the same fraudulent means as gave the representee his cause of action3. The date at which the value is to be assessed is the date at which the property or rights were acquired, although subsequent events may be