Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2

RSFSR Issues 1918-23

The auction will start in __ days and __ hours

Start price: $1,000

Buyer's premium:

1921, 100r orange, printed on thin paper, error block of 50 (25+25) with approximately a half of stamps completely or partially missing and at least 10 stamps have clear double impression, pre-printing paper folds, full OG, NH, VF, a spectacular and rare item, Est. $1,600-$2,000, Scott #181c