It is my observation that the Star F series was made from 1924 and 1925 with some produced in 1926 until all the parts were used up. I have never known M's to have been produced in 1925. Only 26,27,28. The F series and M series used different transmission shifter tops. F's shifted internally and M's shifted externally on the two shift rails. Overhead vents were a feature of the M series. Early M's had solid mount engines and later '27's had rubber mount engines. I have noticed M's having beaded sides, smooth sides, and bolt on cowl beads. M's also used either smooth of beaded fenders. Early M's had drum headlights and later M's used bullet headlights.
As far as your title, it was common, in the past, for "not so bright" county workers to get the title info wrong.
Don, thanks for your response to my questions. My car does have the solid mounted engine and the exposed shift rails. I'm not sure if the rear panel difference was a situation where they were using up left over panels from from 1925 production ( is this panel the same for 25' 26' sedans?) or maybe a production change correcting a mounting problem on the assembly line. Will probably never know for sure. Maybe being a very early 26' the car might have been purchased in late 1925 and been dated as such. Oh well, such is the adventure of restoring old cars. You gotta love it! Thanks Curt
Where Are You From? Denver
Do You own a car built by Durant? 1926 Star m 4dr sedan