St Vincent - Bequia 1988 International Tennis Players - $2.50 Mats Wilander imperf Cromalin die proof (plastic card) in magenta & cyan only plus issued stamp, a rare proof item from the Format International archives. Cromalin proo……Details Below

St Vincent - Bequia 1988 International Tennis Players - $2.50 Mats Wilander imperf Cromalin die proof (plastic card) in magenta & cyan only plus issued stamp, a rare proof item from the Format International archives. Cromalin proofs are an essential part of the printing proces, produced in very limited numbers and rarely offered on the open market.