Catalog archive | Auction 192

19 - 20 May 2023

SWITZERLAND
Lot 4134
Lot 4134
Opening bid
30
507b
BF
40 C. Airmail blackish cobalt on orange white, horizontal pair on first flight letter Zurich Geneva Sao Paolo to the USA.
For lots of the clearance sale we accept underbids up to 30% starting price - if there is no higher bid!