10 Mark, 1974, 25 Jahre DDR, Legierungsprobe Ag 500/Cu 500, Auflage nur 1500 Stück, st. J. 1551P

10 Mark, 1974, 25 years German Demokratic Republik (East Germany), alloy sample Ag 500 / Cu 500, issued only 1500 piece, st. J. 1551 P; (Image 1) (Image)

10 Mark, 1975, Albert Schweitzer, in Hartplastik verplombt, nur 1040 Stück, PP. J. 1554

10 Mark, 1975, Albert Schweitzer, in uPVC sealed, only 1040 piece, PP. J. 1554; (Image 1) (Image)

10 Mark, o.J., Probe, Otto Guericke, st. J. 1565P

10 Mark, undated, proof, Otto Guericke, st. J. 1565 P; (Image 1) (Image)

10 Mark, 1978, Weltraumflug, in Hartplastik verplombt, PP. J. 1568

10 Mark, 1978, world space flight, in uPVC sealed, PP. J. 1568; (Image 1) (Image)