Large GDR collection of stamps

Lot 9000 limit € 380

mint never hinged and canceled, period 1949 - 1990, probably largely complete collection, including: Debria block (Mi block 7, postf.), German-Chinese friendship (Mi no. 286-288, used), all 4 Karl- Marx blocks (Mi block 8 A/B, 9 A/B, used, of which block 9A on cover as registered mail genuinely used), Engels block (Mi block 13, postfr.), "Pappchinese" (Mi No. 662, postfr., used), block inauguration memorial Buchenwald (Mi block 15, stamped), 3 x large block "15 years DDR" (Mi block 19, 1 x used, 2 x postfr.) etc. , initially simply approx. from 1955/56 issues mostly double: mint never hinged and canceled, in addition issues SBZ general issues, among other things with the Goethe - block (Mi block 6, special cancellation), unchecked in 15 slip-in albums