Odd frame VIN

[djohns]

Buddy of mine has a frame with the following VIN. Does not look altered. Any insights ?
C72-64-4nnnnn. Looking for a C72 engine or at least a genuine top crankcase stamped C72E

[Michael Stoic]

Based on what I've seen with other VINs of the period, this is going to be a 1964 model year.

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Michael Stoic

[djohns]

Thanks for the reply. First I’ve seen, in my limited experience, of a year number outside of the 5/6/7 number VIN stream. Unique to certain “C” models vs “CA” we see here? Trying to expand knowledge.

[Michael Stoic]

Based on the Survey entries received so far (several hundred), at least for the CB/CL/CA bikes, the model year prefixes seem to *end* with 1964, and also, sometimes in 1964 the serial sequence goes to a multi digit number instead (and no model year prefix) and that format continues through the series end. I've never seen a model year prefix of "65" or later.

That said, as more entries are collected, some other pattern might turn up.

Tell everyone - we need many more survey entries!!!

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Michael Stoic