unused 4c. on 3c. red , fresh and fine with much original gum. R.P.S. Certificate (1938). Photo
Post Lot Text
This stamp shows the extended line below the bottom left corner of position  of the sheet, placing this example from the upper right pane. This is an important stamp which helps unravel the make up of the three sheets, For more information, plese see the Philatelic Extracts at the end of this catalogue.