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Post by csulaguy on Sept 5, 2018 4:02:59 GMT
Has anyone figured out DR1 serial number dating? I have two units that both start with 1; could that imply 1931, or could there be other digits that imply the year? I think the second and third digits on one were 29 and on another, 32.
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Post by Travis on Sept 5, 2018 15:13:50 GMT
Paul,
I have always heard that the DR1 model came out in 1929 and ended in 1932. They started with a type D control and a form A evap. I believe yours are both type E and form B. That would place them in 1930 or later. The deco hardware also dates that one even later. I suspect the first number is the year. I'll have to check mine and see if there's a pattern.
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Post by csulaguy on Nov 2, 2018 7:03:12 GMT
Let me know what yours say. Makes me curious, as the first digit always seems to be a 1, however, I have 1 DR1 that is 129 and another that's 131. I need to check the one with the plugged float to see if the second and third digits seem to represent a year.
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