Estonia - postal stationery: 1937, PARO advertisement letter card 10s. blue, ser
Estonia - postal stationery
1937, PARO advertisement letter card 10s. blue, series no. 19 "UNION"/"KAWE", unused, some gum toning, slightly split perfs, overall fresh and very fine.
Condition: postal stationery
Catalog number(s): HK 1