![COSTA RICA - 1931 - AIRMAILS: 'Airmail' SURCHARGE issue on 'Revenue' stamps, the set of three on toned paper from the first printing with overprint in brownish vermilion, fine mint. (SG 187/189) (COS/25422)](http://latinamericanphilatelics.com/cdn/shop/products/COS25422_{width}x.jpg?v=1613137002)
'Airmail' SURCHARGE issue on 'Revenue' stamps, the set of three on toned paper from the first printing with overprint in brownish vermilion, fine mint. (SG 187/189)
'Airmail' SURCHARGE issue on 'Revenue' stamps, the set of three on toned paper from the first printing with overprint in brownish vermilion, fine mint. (SG 187/189)