Oil bath air filter

[Grant Bowker]

Jordan's filter with the orange AC label seems to have part number 1544945 on the cover. Can the number be confirmed? I don't see it in the parts list for C15A, C60S, C60X or the earlier list covering all models C8 to CGT. Nor do I see it in the 1929-1948 master parts list.
Googling Chevrolet 1544945 didn't produce any relevant results for me either.

First, can the number be confirmed?
Second, can anyone help me to understand?

A possible explanation is that the cover to the air cleaner isn't listed separately in any of the above parts lists so the number might be the number for the cover alone.... If the cover is integral with the element this idea seems to fail as the number isn't one of the ones given for the element in the parts lists.

Bob - feel free to photo and post my cleaner along side yours and the mockup of the Fram CA146 to show the fit issue...