On February 3, 1962, a basketball friendly match between Yugoslavia and Belgium took place in Maribor. The game ended 83:63 for Yugoslavia. However, shortly before the end of the game, prepared envelopes were already handstamped 61:83. But in the last moves of the game, Belgium scored 2 more points. The final score (63:83) was then stamped with another handstamp on the right side of the envelope. On the envelopes that already had the 61:83 handstamp, the final score was stamped again and the "wrong" score was crossed out. Overall, only a small part of the envelopes were stamped prematurely.

Cover with wrong result and corrected

Cover with correct result