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The Army & Navy Co-operative Society Ltd used this perfin between 1890 and 1969.
The format is C/AN/S
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Frodingham Iron & Steel Company from Scunthorpe, Lincolnshire used this multi headed die between 1925 and 1936.
The format is FI/&SCo/Ltd
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The Port of London Authority used this perfin on stamps between 1905 and 1935
The format is PL/A
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The Society for the Propagation of the Gospel in Foreign Parts was founded in 1701 by the Church of England, and for the first half of the 18th century its work was chiefly carried out in mainland North America, Newfoundland and the West Indies. It is based in London and used this perfin on its stamps between 1918 and 1939.
The format is SPG
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