Lot 60782 – 6d to 1s, specialised study of the T22, S22 and U22

6d to 1s, specialised study of the T22, S22 and U22 control blocks neatly mounted and knowledgeably written up on 27 album pages, with 41 items including control singles, strips of 3 and 5 and mostly blocks of six, showing a wonderful array of overprint, watermark and other control variations, an excellent basis for study and expansion