Hi Matthro,Thank you, Mr. adorshki ! I have read your message twice now and will again a few times to try to take it all in. Thank you for this brief encyclopedia of information. I take it that the 16" is somewhat limited to the F-212 ??? Also, I did not understand the relationship the 'JF' models had to others as well as I do after reading your description. I am very glad I didn't just leap on a guitar via the internet before joining here and learning from all you good folks. Thank you adorshki and the whole crew.
I believe the F-312 body style was also a 16" lower bout. But, the F-312 is pretty rare and expensive. There is also the Orpheum 12-string, which was built in New Hartford. Not a lot of those either, but also similar.
There is/was also in recent years several 12-string models from offshore that were nice.
Finally, there are also a lot of 12-string dreadnought-style guitars that are terrific. Those might be easier to find in your search.
Best wishes, Matthro. In this hunt, patience is a virtue.
By the way, if you're planning to stick around, there are several books to watch for that can help you navigate the waters. In particular is the bible (Hans Moust's "The Guild Guitar Book"). Try to get a copy of that.