Is this a '48?

[rowan782]

[keiser31]

1946-48 and very early 1949.

[61polara]

Keiser31 is right on this one.  There are a very few changes from 1946 to 1947 and almost no changes from 1947 to very early 1949.  Chrysler lumped all of these production numbers together as one run.  These cars were mostly titled based on the year they were sold in.  I would call it a 1948 because I think that was the highest production calendar year for these.