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Caterpillar Running In Oil

Caterpillar Running In Oil

Bruce P
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Hi all. This board has been hanging in my cousins garage for years. He brought it over to me today to hang on the wall. Anyone have any idea what vintage this would be? I’d guess mid Thirty’s, since they got their first RD4 in ‘36

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Sat, May 30, 2026 1:30 AM
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