1918-21 Postal Stationery: Selection of unused and used stationery, showing 1a on 20pa three envelopes used, one registered and the other with additional franking, plus 2 1/2a on 1pi three unused registered envelope included two extremely rare large format types, plus a few other unused, very fine and a scarce group (9 items) (Est. ? 500/1'000) (Image)