Proof PLATE PROOF: 4d. brown-rose on pink (thinned); COLOUR TRIALS: 4d. rose (tiny mark on face) and 4d. chestnut marginal pair and single

Details
Proof PLATE PROOF: 4d. brown-rose on pink (thinned); COLOUR TRIALS: 4d. rose (tiny mark on face) and 4d. chestnut marginal pair and single