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10324954 Typex Mk III cypher machine for field use, late 1930s. | |
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10305940 Typex Mk III cypher machine for field use, late 1930s. | |
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10305941 Typex Mk III cypher machine for field use, late 1930s. | |
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10305939 Typex Mk III cypher machine for field use, late 1930s. | |
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10305938 Typex Mk III cypher machine for field use, late 1930s. | |
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