Jamaica SG 85 Proof 1919-21 1s vignette and frame

1919-21 1s, pair of stamp-size die proofs in black on thin wove for the vignette and frame. Fine and rare. Ex 'Dubois' (Spink 14 Jul 2021, lot 495) and Surtees (RL 14 Sep 1976, lot 590).