The serial number is the capper, and a reminder that they must have had leftover motors from the 1926 model year that didn’t get sold until the following year. Unlike other manufacturers of the day (i.e. Evinrude and Lockwood) the accuracy of Johnson production numbers have never been questioned and there isn’t any reason to do so. Therefore, you’re correct, your AB-25 is a ’27 model and represents one of the last batch of motors built in that style before being superceded by the A-35’s. Just how big that last batch was, I’m not going to guess.
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...
