Pakistan SG63/4 Scinde Dawk Centenary set in IMPERFORATE U/M blocks

1952 Scinde Dawk Centenary 3a deep olive/yellow-olive 12a deep brown/salmon each in an IMPERFORATE block of 4 (the latter from left of sheet) unmounted o.g. (minor wrinkles). Original Purchased from Stanley Gibbons (Still on their card)