Lot 60808 – 2 1/2d, 4d and 5d, specialised study of the T22 and

2 1/2d, 4d and 5d, specialised study of the T22, U22 and U23 control blocks neatly mounted and knowledgeably written up on 21 album pages, with 36 items including control pair, strips of 3 and blocks of 4, 6, 18, 24 and 42, showing a wonderful array of overprint, watermark and other control variations, an excellent basis for study and expansion