Pre-stamped envelopes issued by the Post Office. Printed by McCorquodale & Co Ltd.

Envelope sizes - (price was the same for either size):

Imperial Size 'A' = 4¾ inches x 3 11/16 inches (120mm x 95mm) [called Size H by Huggins, 1970]

Imperial Size 'N', 'Commercial' Size listed as 6 inches x 3½ inches (152mm x 89mm) in 1937 Post Office Guide [called size G by Huggins]; then as 5⅜ inches x 3⅛ inches (135mm x 80mm) when the 2½d envelope is issued from 1942 [size E by Huggins].

In 1951 the colours of imprinted stamps were changed to meet Universal Colour Scheme regulations set by the UPU.

Date	Value	Size (mm)	Paper	Flap (from front)	Stamp
May 1939	½d	152 x 89	Cream - laid	Left Ungummed	Green
June 1940	1d	152 x 89	Cream - laid	Left	Carmine
February 1939	1½d	152 x 89	Cream - laid	Top	Brown
		120 x 95
June 1940	2½d	120 x 95	Cream - laid	Top	Blue
1942			Lower quality of paper
1946			Reduced weight of paper
1940		152 x 89	Cream - laid
1942		135 x 80	Cream - laid, low quality
1946			Reduced weight of paper
3 May 1951		120 x 95	Cream - laid		Carmine
		135 x 80
All envelopes above were issued with SPECIMEN overprints.
Stamped To Order Envelopes
Date	Value	Stamp	Examples
June 1939	½d	Green
May 1951		Orange
June 1939	1d	Carmine
May 1951		Blue
June 1939	1½d	Red-brown
May 1951		Green
February 1940	2d	Orange
May 1951		Red-brown
February 1940	2½d	Blue
May 1951		Carmine
May 1951	3d	Violet
October 1950	4d	Blue	Issued with head of George V as no die available for George VI at this value.
April 1951			Issued with head of George VI
1951	6d	Purple
1951	9d	Green
1957	1/-	Brown

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Contact : Malcolm Sanders :  kg6gb@hotmail.com