GB 1935 SG439c var Booklet pane
Stock Code: P15602604
1935 ½d Green (Intermediate format, Wmk Upright). Very fine unmounted o.g. booklet pane of six (Perf type P), overprinted "SPECIMEN" type 32 and upper left hand stamp with additional punch hole. Slightly trimmed perfs at foot nevertheless a unique pane in private hands, to be listed in the forthcoming Specialised Vol.2 catalogue as NB20w. Ex. NPM Archive.
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