D14b 1924-31 George V 3d Dull Violet Postage Due Watermark Block Cypher Experimental Watermark 111a in fine used condition with very light cancellation.

Very scarce and tricky stamp even as here with what appears to be a non postal use cancel not least as the stamp has full reverse gum intact.

This the watermark W16 used soon these experimental papers so briefly by Waterlow in the 1924-25 period.

Like every stamp I sell this has been fully checked and confirmed by myself as correctly identified and described, not just removed from album where it was listed as such.