Great Britain Machins by Adminware

3d spectrum violet

Pre-decimal
Water-activated gum
First seen: Aug 8, 1967

Harrison & Sons / Photogravure

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Head A/B Detail

Multi-value coil

Paper	Head Type	Issue date	Source	Booklet singles	Gum
2-band phosphor
OCP	Head B	Apr 6, 1968	Booklet	PDP4 - cut left PDP4 2 x 1d yellow ochre 2 x 3d spectrum violet - cut left & bottom PDP4 2 x 1d yellow ochre 2 x 3d spectrum violet - cut right PDP4 2 x 1d yellow ochre 2 x 3d spectrum violet - cut right & bottom PDP4 2 x 1d yellow ochre 2 x 3d spectrum violet	PVA
OCP	Head A	Sep 26, 1968	Coil (vert)		PVA
OCP	Head B	Mar 1969	Coil (vert)		PVA
OCP	Head A	Aug 20, 1969	Sheet		PVA
Centre band (4mm) phosphor
OCP	Head A	Aug 8, 1967	Sheet		Gum Arabic
OCP	Head A	Aug 8, 1967	Coil (vert)		Gum Arabic
OCP	Head A	Oct 2, 1967	Coil (horiz)		Gum Arabic
OCP	Head B	Mar 12, 1968	Sheet		PVA
OCP	Head B	Mar 25, 1968	Booklet	PDP3 - cut bottom PDP3 5 x 3d spectrum violet - cut right & bottom PDP3 5 x 3d spectrum violet - cut top PDP3 5 x 3d spectrum violet - cut top & right PDP3 5 x 3d spectrum violet	PVA
OCP	Head B	Aug 27, 1969	Coil (horiz), multi-value		Gum Arabic

Head A/B Detail

Head A has a flat base; Head B is rounded.

Multi-value coil

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Booklet pane numbers used courtesy the Modern British Philatelic Circle
who publish 'The Bookmark' Catalogue