Need to ask about a lot?

GERMANY EAST - OFFICIALS CENTRAL COURIER SERVICE 1956 - 1957 fine mint (many never hinged) collection includes the 1956 (Oct) 20pf never hinged mint, 1957 (1 Apr) surcharges incl stamps with stamp-size blank labels perforated all around & 40pf complete sheet never hinged mint, 1957 (Apr) 20pf unissued with spectacular perforation error NHM, 1957 (15 Apr) 10pf complete sheet NHM, various imprint strips, identified reprints etc. Very fine (200+ stamps)