In People v. Henderson (1965) 238 Cal.App.2d 566, the court recognized the rule that an owner may testify to the value of the stolen property even when the owner lacks expertise in evaluating that type of property. (Ibid.) There, the "owner testified that the stolen watch was worth $ 1,800 and the stolen ring $ 1,200; he had purchased them from established jewelers for these sums; and he had with him the receipts for them." (Ibid.)