NOS in the box, never installed or used. I purchased this at a local GM dealer parts counter in the mid 90's and it's been safely stored away since. This is my last one and it is extra nice! Part numbers on box are 15-4208 / 12306610. It is stamped EATON & imprinted 403983-OW on the clutch face. $275 plus shipping in medium flat rate box.

 

I assume that's for a 70-72 442/W30 455 application. Price is a bit rich...Do you know what its for? Al