21594 Newfoundland 1937 KGVI 3c. Die I. Marginal horizontal pair. Imperforate between. SG 258b Cert backleelee2:15 pmSeptember 29th, 2024 21594 Newfoundland 1937 KGVI 3c. Die I. Marginal horizontal pair. Imperforate between. SG 258b Cert back 0 Newfoundland 1937 KGVI 3c. orange-brown. Die I. Variety, ‘Imperforate between’. With Cert. SM. RARE.