KUT 1938 KGVI 15c Imperf Plate Proof / Printer's Trial

1938-54 IMPERF PLATE PROOF / PRINTER'S TRIAL of frame plate for KGVI 15c (SG 138). Bottom right corner block of two complete, two halved impressions in issued colour on green coarse paper. With Plate No 3A. Reverse is clear. VF, attractive item from the printer's working materials.