1948 KGVI Tercentenary of Settlement Issue: MASTER DIE PROOF of frame plate in black on glazed card 87x63mm. Referenced "XC 4521" at top. Proof shows blanks for the pictorial central vignettes and value tablets whilst the integral KGVI vignette is completed. Light hint of surface speckling mentioned for accuracy. A rare & exceptionally attractive master proof from the Canadian Banknote Co archives.