In a controversy between rival claimants for commissions upon a sale of real estate, where there is no dispute that a certain person holds the title and paid the purchase price, and nothing to show that the purchase by such person was a mere pretense to cover a sale to the brokers who ostensibly produced him, the presumption must be that he was a bona fide purchaser, and that the only parties entitled to commissions are those who produced him, and the mere fact that such parties may have accepted commissions from him does not increase the rights of claimants who did not produce him. Shapiro v. Shapiro, 110 N. Y. S. 11, 125 App. Div. 608.