Three stamp colleges of athletes today, found together--I decided to list individually, but they make a great trio, too. The printing on the back of the card indicates the postcard is Hungarian (and indeed I know the seller I purchased it from bought it from a Hungarian auction house), and based on a little research I believe the number 2014 that appears on the back of the postcard is a printers number rather than referring to the year, but I am not 100% certain. Whatever the case, a pretty wonderful diver I think, gracefully captured mid air and seeming as likely to start flying skyward as to plunge! 

5 7/8" x 4 1/8". Oversized postcard, excellent condition, unused back.