French 38 Rimfire Pistol

[james m]

I recently acquired this French 38 Rimfire pistol out of an estate. So far I've been able to determine the caliber(38 Rimfire) and maker Gaubert Brevete but little else. It is a single shot and opens when the under lever is depressed. I searched and only found scant information but this is what I did find. This is a scarce maker and the pistol is circa 1870. The pistol is lightly engraved all over which doesn't show up very well and in excellent operating condition. The sole example I found for sale had an asking price of 1700 Euro. I would appreciate any additional information and in particular what the fair market value may be.
Jim

[james m]

Bringing this back up in the hopes that our European members can shed some light on it.
Jim

[Johnny Peppers]

Hammer strike appears that it is from above like a pin fire rather than from the rear on a rim fire.

[james m]

Hammer strike appears that it is from above like a pin fire rather than from the rear on a rim fire.

The sole listing I can find for it lists it as a rim fire. Additionally it wouldn't require a firing pin which it has if it were a pin fire. Note the 4th photo.
Jim