St Vincent - Grenadines 1987 Locomotives #7 (Leaders of the World) 50c LNER Class A3 se-tenant imperf die proof in magenta & cyan only on Cromalin plastic card (ex archives) complete with issued normal pair. (SG 508a). Cromalin pr……Details Below

St Vincent - Grenadines 1987 Locomotives #7 (Leaders of the World) 50c LNER Class A3 se-tenant imperf die proof in magenta & cyan only on Cromalin plastic card (ex archives) complete with issued normal pair. (SG 508a). Cromalin proofs are an essential part of the printing proces, produced in very limited numbers and rarely offered on the open market.