1882 ½D ULTRAMARINE KEBLE COLLEGE (CS10) MINT SHEET OF 48, STAMP 4/1 WITH VARIETY 'CRACKED PLATE'. A good unused sheet of 48 1882 ½d ultramarine Keble College (CS10), several with surface rubs and some adherence on reverse, otherwise good original gum. Stamp 4/1 shows variety 'CRACKED PLATE'. (Ref 135861).