Proof 1893 Postage Due imperf. proofs of essays of 2c. to 20c. on thin watermarked card in colours somewhat different from those of issued and centre background blank in marginal pairs and imperf. proofs of ½c. to 20c. in issued colours in pairs (one 10c. has small nick at top) on gummed paper. L. D16EP - D20EP, D14P - D20P