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A-body frame numbers how to decode?

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Old May 14th, 2021, 08:21 AM
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A-body frame numbers how to decode?

Front drivers side





Dear Oldsmobile guru's
I am asking the olds gods for help once again, I have a 68 Oldsmobile that was on a frame that I am not sure of its origin or what it is from, not sure if its the original but I doubt it. Is there a site or place to look up these numbers? Any help would be appreciated.
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Old May 14th, 2021, 09:36 AM
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the top numbers should partialy match the vin
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Old May 14th, 2021, 09:59 AM
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3943331 is the part number for the Holiday Coupe/Sport Coupe frame.
The "S" in a circle is AO Smith, the manufacturer.
All 2dr frames apparently have 190, 191, or 192 after that. Not sure what that means.

The next line is a date code.
12 = Dec
19 = 19th
N = year (presumably 1968 for a car with a 1969 VIN derivative)
1 = first shift
XK is the frame ID code, which will be on the car's build sheet.
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