British Guiana SG 308a/19, 290, 293 Mint 1938-51 set to $3 with sheet number

1938-52 1c green to $3 red-brown (24c wmk sideways), 11 values less 2c slate-violet, and 1934-51 3c scarlet and 12c red-orange, perf 12½ (except 96c perf 12½x13½), each as an upper marginal block of 4 (96c pair only) with sheet number, large part o.g. (stamps unmounted). Odd minor perf blemishes and a few lower values with faint traces of storage toning on gum, still attractive and unusual multiples. (cat £440+) [N.B. The sheet numbers range from '002' ($3) to '190' (36c).] - P267000885