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, nicely centered unfolded blocks of four, full OG, NH, VF, C.v. $2,072++, SBK #F1-6, C.v. CHF3,000 as singles, Scott #C1-6