Contest Prize announced

Time for another contest. We haven't had one in awhile. As you all know, it's playoff time! And what better way to celebrate than with a contest.
The first round ends tonight. Starting with round 2, pick the winners of the remaining series all the way through to the Stanley Cup Finals!
(relax, don't start thinking yet, I'll have the bracket up late tonight or tomorrow)
They'll also be a couple of tie-breaker questions.

What will you win? I'm glad you asked. The winner will receive a complete set of 1977/78 OPC Hockey Glossy Inserts.

These were randonly inserted into packs over 30 years ago. But don't worry, I've completed the set for you.

Questions?

EDIT: the contest is live! Go HERE and make your guesses...