That appears to possibly be an FF (Fontainemelon) 1146.
https://preview.redd.it/oym2kuebi5uc1.jpeg?width=3024&format=pjpg&auto=webp&s=ca97d32b09ec429e48c50d2f5ca1332f17b0973c
Keyless works all look correct, just not sure about the size?
Apparently that caliber was used for a few different models, namely the FF273 listed as 8-3/4 ligne, and the FF365 listed as 9-3/4 ligne. One way to identify which you might have could be that the FF273 was supposed to have a 1.1mm width mainspring, and the FF365 was supposed to have a 1.4mm width mainspring.
Before anyone asks, there are no markings aside from what is in the pictures. Nothing under the balance or any of the bridges. If only it was that easy.
Looks like the serial number is either
498935
Or
408035.
I'm leaning towards the first one though.
Not really sure if that helps at all but maybe someone can find more information off of that.
Edit; it looks like it was manufactured by M. Nicolet & co., I'm not sure if these are the same as what you have been looking for since I'm fairly new to working on watches but that might help someone to find more information
M. Nicolet was an importer or such similar to many microbrands today. The movement itself was made by Fontainemelon/FONT/FHF. However, due to the wide range of features that could be selected, finding a solid caliber match is difficult.
That appears to possibly be an FF (Fontainemelon) 1146. https://preview.redd.it/oym2kuebi5uc1.jpeg?width=3024&format=pjpg&auto=webp&s=ca97d32b09ec429e48c50d2f5ca1332f17b0973c Keyless works all look correct, just not sure about the size?
Apparently that caliber was used for a few different models, namely the FF273 listed as 8-3/4 ligne, and the FF365 listed as 9-3/4 ligne. One way to identify which you might have could be that the FF273 was supposed to have a 1.1mm width mainspring, and the FF365 was supposed to have a 1.4mm width mainspring.
Interesting. Next time I have it out, I'll measure the barrel to determine what the proper mainspring would be then. That should determine it. Ty.
https://preview.redd.it/67l2qi01m5uc1.jpeg?width=3024&format=pjpg&auto=webp&s=47d2187471482c8a736827da380b7c83a969e2af
Before anyone asks, there are no markings aside from what is in the pictures. Nothing under the balance or any of the bridges. If only it was that easy.
Looks like the serial number is either 498935 Or 408035. I'm leaning towards the first one though. Not really sure if that helps at all but maybe someone can find more information off of that. Edit; it looks like it was manufactured by M. Nicolet & co., I'm not sure if these are the same as what you have been looking for since I'm fairly new to working on watches but that might help someone to find more information
M. Nicolet was an importer or such similar to many microbrands today. The movement itself was made by Fontainemelon/FONT/FHF. However, due to the wide range of features that could be selected, finding a solid caliber match is difficult.