10-10000 depending on EXACTLY what it is
Depends on which gun and condition, condition, and condition...
Yes, Fuselier is a French last name. It is believed to have originated from the Old French word "fusil," which means "steel" or "gun barrel."
Impossible to answer with the information you have provided. Sort of like "How much is a V-8 car and how old is it?"
Gun shop, gun show, on line gun forum, or post here giving us as much information on the gun as you can. Right now, we do not know if it is a rifle or pistol.
depends on what kind you want
The French "75" was a howitzer, a large gun used for firing in a high arc onto the enemy. The French 75 was a huge leap in technology of large guns, as it used a hydraulic mechanism to use the recoil of the gun to work the action, and also made the recoil of the gun less. This allowed the French 75 to fire at a much greater rate than contemporary guns.
gun = pistolet
It could be anywhere from 30-100 years old and worth 50-300 USD
Teddy Roosevelt's first gun was a Winchester, model 1876. He ordered it when he was 22 years old. No other gun was shot as much or was as reliable as the Winchester.
Need MUCH more information in order to answer this question.
What model is it. How old is it, what condition is it in, is it still working?
Earlier gun than the Old West.