142209 1884 STAMP COMMITTEE DE LA RUE 4D COLOUR TRIAL IN ISSUED COLOUR OF DULL GREEN ON WHITE PERFORATED WATERMARKED PAPER (SG192) 'LONDON' OCTAGONAL TRIAL CANCELLATION.

1884 STAMP COMMITTEE DE LA RUE 4D COLOUR TRIAL IN ISSUED COLOUR OF DULL GREEN ON WHITE PERFORATED WATERMARKED PAPER (SG192) 'LONDON' OCTAGONAL TRIAL CANCELLATION. Fine 1884 Stamp Committee colour trial 4d in issued colour of dull green (SG192) on white perforated watermarked paper letter LH with fine strike 'LONDON' octagonal trial cancellation 30 JU 84 codes 'aB'. This particular colour trial is mentioned by SG on page 251 'Probably from W.H. Mulock, Confidential Enquiry Branch'. Very rare. (Ref 142209).