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

Soviet Union

The auction will start in __ days and __ hours

Start price: $400

Buyer's premium:

1976, 25th Communist Party Congress, Industry, 4k multicolored, left sheet margin imperforate single, full OG, NH, VF and scarce, Est. $800-$1,000, Scott #4476 imp