I am not familiar with Trenton Watch, so I'm a bit puzzled about this. Could you kindly help me ?

Trenton Watch Co. used many designs to try and satisfy a market they believed was between the cheap "dollar" watch and the higher end Jeweled watches. To do this Trenton finally made many direct copies of other US watchmaker's designs.

Your pictures are of an 18 size Trenton Model 1 Hunter type watch made during their first years of business of 1883 1887. This was a more original design than the later Trenton copies. It had 3/4 plate movement that was most unusual among the US watchmakers of that period.

Hi, Dave, pleasure reading you.

As I said, I'm not familiar at all with Trenton (and from your words, most likely I'll become a Trenton fan ...), but I was simply suspecting that this movement could be the last one on page 399 of the Giude, seen in drawing at page 400 ... if so it could, anyhow, be a reasonable buy, isn't it ?
Thanks as ever for your help
Mario

Mario, I mader a mistake, this is a 16 size model 1. If it is the converetible model then you have a rare collectible. I am somewhat confused because the Meggars Ehrhardt books has drawings of two different identical looking movements, one for the Hunter Type and one for the Open Face that have the same plate design, EXCEPT they have two different locations for the setting lever. If that is true, they would be dedicated to style.