Bidspirit auction | Liechtenstein - Air Post stamps

Liechtenstein - Air Post stamps - 1936, Eagles, 10rp-50rp, complete set of five, grilled gum, bottom sheet margin blocks of six (2x3), full OG, NH (hinged on margins only), VF, C.v. $1,500, SBK #F9z-13z, CHF2,040++, Est. $300-$400 , Sc. #C9a-13a