ID a vintage Fortis, please!

[norm]

A friend has a ring watch that she inherited from her grandmother (my friend is in her mid-sixties, so there are some years involved here)

I think it is a Fortis. It has a 17 jewel mechanical movement. No complications or second hand. The case is apparently white gold, as it has never tarnished.

Please take a look at my rather pictures, and help me ID this watch if possible. (Make, when manufactured, model name...in fact anything that you know, or any sources I might try other than Fortis itself.)

Thanks in advance

[whifferdill]

No idea! But what a great little watch - please let us know what you find out. It's nice to see something different.

[Steph Skaggs-Kunefke]

I have a similar ring/watch that I am looking for information on also. It was my great-grandmothers.

[timo455]

wow! this is a really cool antiquated timepiece.