Other 4d panes: summary PDP9 PDP10 PDP11 PDP12 PDP14 PDP15
Stamps: 4d vermilion
Machin home
Issue date: PDP9 (Head A, PVA gum) - Jan 6/69 PDP9A (Head B, PVA gum) - Feb 20/69 PDP9B (Head A, Arabic gum) - Feb 20/69