Is there a website than can tell me what my markings mean on my 1942 Lithgow? I see oa on parts, ma on parts, m on parts, etc.
No. 1 Mk III* Question
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Simply ID denoting which factory the parts were made in
M / MA is the Lithgow factory
OA is the "Orange Feeder Factory"
I dont know of a single website that will answer your question - many people have developed their own lists so post your questions and between us we should be able to answer most things. -

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