I voted for 1963. It's a nice, clean typographic design featuring our pal Mr. Met.
I also like the 1997 cover with the lenticular motion image affixed.
Incidentally, for those who may not know, the 1982 edition has a feature showing covers of all the earlier yearbooks... and if memory serves me right they gave away copies at the end of the '82 season, either on Fan Appreciation Day or on the last home game of the year.
Here's the payoff pitch from Familia to Fowler, on the way... and it's IN THERE! Strike three called! The Mets win the pennant! The New York Mets have won the National League pennant! Put it in the books! The New York Mets for the first time in 15 years are champions of the National League!
- Howie Rose calls the Mets winning the 2015 National League Championship Series - NYM at CHI, October 21, 2015, WOR Radio