Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - San Marino - 1931, View of San Marino, 50c-10L, complete set of ten, six of which with sheet margins, full OG, NH, VF, C.v. $1,452, Sassone #A1-10, €2,000, Est. $300-$400 , Sc. #C1-10