The fact that the purchaser secured by the real estate broker was acting in behalf of another, does not affect the broker's right to a commission, if the purchaser was able, ready and willing to buy on the terms authorized by the principal, and no binding written contract of sale is required. Gelott v. Ridge, 117 Mo. 553, 23 S. W. 882. See also Sec. 487.

Failure of a broker to disclose to the vendors that the purchaser was acting as the agent for an undisclosed principal, does not affect the broker's right to commissions, the purchaser being financially able to carry out his contract, so that the vendors are not injured. Lawler v. Armstrong (Wash. Sup. '09), 102 P. 775.