An owner of land listed it with a real estate broker to be sold within a given time, at a stated price, agreeing to pay the broker ten per cent. if he sold it, and five per cent. if the owner sold it, which he did within the specified time. It appeared that the number of the lot was by mutual mistake erroneously stated in the contract, but the land was otherwise clearly described. Held, that the mere mistake as to the number of the lot was insufficient to defeat a recovery by plaintiff. Tyler v. Justice, 120 Ga. 879, 48 S. E. 328. See also Secs. 59, 428.