10 Pfg. Germania carmine red with overprint in the vertical block of eight, each stamp with centered and clear date stamp strike Sopot *C* 3. 2. 21, certificate with photograph Gruber BPP: ". . . . Used within the period of validity. . . In perfect quality" - very decorative and scarce superb in every respect (choice copy) unit this not frequent colour, 1520,- + +