I have a new old stock Michigan J-145 aluminum propeller for the 1930s era Johnson K-50, K-65, K-70, K-75, and K-80 models. It is listed as 9-1/2 inches in diameter and 9-1/2 inches in pitch. It has a copper colored paint on it. Comes in the original box, with a "Genuine Michigan Propeller" sticker still partially stuck to the prop. Box is in nice shape, too. Asking $65.00, postage in the U.S. included. Photos available upon request.
Email: csr112-n AT twcny DOT rr DOT com