Collection of first day covers DDR

Lot 9008 limit € 70

All in all probably more than 2000 first day covers, postal stationery, period 1965-1990, in each case matching FDC, special stamps and special cancellation (without address), probably mostly complete collection, double over long stretches, in addition to it various envelopes with numerous stamped GDR stamps on pieces of paper, various Postal stationery, lot of used letters with collector's frankings Bund as well as the envelopes of the Deutsche Post for the letters (ABO), unchecked in three boxes