It is an established rule that if an authorized broker is the "procuring cause" of a sale, he is entitled to his commission. He does not have to introduce the parties, nor bring them together personally. If through his efforts they get together and come to an agreement, he must be recognized. An illustration of this would be a case in which the purchaser came to the broker's office, was furnished by him with the information and sent to the property. If the purchaser then went to the owner direct and a deal was made between them even though the broker's name was not mentioned he would have an enforceable claim for commission.15 If a broker advertises property, receives and transmits an offer, but the sale is finally consummated directly between owner and purchaser, he is entitled to commission. 16