Auction 90, Session 2 - Worldwide Rare Stamps and Postal History

Russian Air Post Stamps and Covers

The auction will start in __ days and __ hours

Start price: $150

Buyer's premium:

1927, International Air Post Conference at the Hague, 10k and 15k, complete set of two in vertical right sheet margin pairs, bottom stamp of 15k with broken ”A” in ”AVIO” variety, full OG, NH, VF, Est. $250-$300, Sc. #C10-11, var