1884 STAMP COMMITTEE DE LA RUE 1½D PURPLE ON GREY PERFORATED UNWATERMARKED PAPER COLOUR TRIAL (SG188), LONDON OCTAGONAL TRIAL CANCELLATION. Fine 1884 Stamp Committee 1½d (SG188) perforated colour trial in purple on grey unwatermarked paper lettered AF (listed by SG page 251). Cancelled fine part strike 'LONDON' octagonal trial cancellation 30 JU 84. Rare. (Ref 142205).
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