On July 20th, 1956 the German Democratic Republic (the former East Germany) released a pair of stamps commemorating composer Robert Schumann a 100 years after his death (photo on right).It was soon discovered that the scores behind Schumann's portrait belonged to another composer, that of Austrian composer Franz Schubert. A redesigned postage stamp with corrected scores was reissued on October 10th, 1956.
You might think that the Schumann stamps with the Schubert scores would be valuable to collectors, but it only trades for about 4 Euros (5.50 US $) as listed in the German Michel catalogue. The corrected/reissued set with Schumann's scores sells for more: 9.50 Euro (13.- US $).
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