Not exactly sure about his part... it's in a very old Pontiac Motors cardboard shipping box, and it's marked Guide '53.

On the outside of the box is a hard to read part number that looks like 928486. On the cam is marked 5942923. I've looked these numbers in a Pontiac book but couldn't match them up.

Photo Link:
http://inap.biz/sheds/jh/forsale/cbd_53pontturn.html

Price $60


Thanks,
Ramblin Randy