It was not unusual for a prior owner of an old car to "jazz it up" in various ways, sometimes rather tasteful. As for the 1 piece hood & trunk lettering, I do have a K-F TV commercial from the fall of 1947 that shows a Frazer with 1947 lettering and right next to it a 1947 Kaiser with the 1-piece version as seen on 1948's. There were 65,066 1947 Kaiser Specials built according to factory producton counts, so the last serial number would be K100-66056. That makes it one of the last 500 of the type produced. It might be that the lettering change was made around this point.