Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Liechtenstein - 1930, Airplane over Mountains and Vaduz Castle, 15rp-1fr, complete set of six, in addition black surcharge 60rp on 1fr lake, full OG, NH, VF, C.v. $648, Est. $200-$250, Scott #C1-6, C14