GERMANY (1989) Maze*. Exclamation, question marks*. MUSTER (Specimen) overprint. Youth Science & Technology Competition. Scott No 1597, Yvert No 1285.
AVAILABLE AT $12
GERMANY (2001) Plant*. Overprinted MUSTER (specimen). Leonhart Fuchs, one of the founding fathers of botany. Scott No 2106.
AVAILABLE AT $20
GERMANY (1981) Arts and Science Medal*. Specimen (overprinted MUSTER). Scott No 9N464, Yvert No 609.
AVAILABLE AT $12