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.
0-and-2 to Jay Bruce. Two out in the 9th, 10 to 2 New York. Familia sets... holds the set... now the 0-2 pitch. Swung on and missed, strike three, put it in the books! The New York Mets have won the 2015 National League Eastern Division championship, and the Mets pile out of the dugout and come out of the bullpen and begin the celebration.
- Howie Rose calls the Mets clinching the 2015 NL East title, WOR Radio, September 26, 2015