Not sure how everyone else feels about this BUT, personally these aren't worth the paper they're printed on ..............

http://shop.ebay.com/club-pristine/m.html?_trkparms=65%253A12%257C66%253A2%257C39%253A1%257C72%253A4026&rt=nc&_trksid=p3911.c0.m14.l1513&_pgn=1



this includes graded versions ...............

http://cgi.ebay.com/1976-77-OPC-DAVE-TIGER-WILLIAMS-ROOKIE-CARD-KSA-9-5-NGM-/280577637678?pt=US_Hockey_Trading_Cards&hash=item4153bafd2e

"a grade of Pristine is equivalent to a PSA 11"

There has been a lot of vending finds for 1973 OPC over the last few years, and a ton have been graded by PSA. These vending cuts do have very smooth sides and tops with razor sharp corners compared to the typical pack pull OPC cuts of the era. If it was not for the PSA slabbing the 73 vending, you would swear they are sheet cut.
I have yet to hear of any 1974 OPC vending finds.