1½d Black-brown, The UNIQUE NO WATERMARK THIN PAPER example with RPSV (2018) certificate and ACSSofGB (1966) Certificate.

Plated as 2R27 which places this stamp in the middle of a pane and not from the edge of the sheet.

The only known example of this variety discovered in 100 years and to be listed in the Australian Commonwealth Specialists' Catalogue as well as Stanley Gibbons.

An amazing item of great importance for any serious KGV collector.