Need Information. What trans?

Fishy68 I cleaned my glasses off and there they were. PK52118318 1974 4865. I have a Model A with a 340 in it with a 727 trans. This trans came with the car as a spare in case the builder decided he wanted another gear. Not sure if I'll ever use it. I think he said it was out of an 80's van but it was to long ago to remmember. If I decided to sell it do you have any idea what to ask.