What model?
The actions operation.
The Colt M1911, a semiautomatic pistol invented by John Browning, was first made in 1910, and subsequently adopted into service with the United States Army in 1911.
50-100 USD
0-60 usd
A single shot pistol, a Derringer and even a revolver are technically NOT considered semiautomatic. To be semiautomatic, the weapon would need to use the energy from a previous round to cycle the action. Revolvers use the muscle energy of the shooter's finger to revolved the chamber.
50-100 USD
Yes, Coonan is one.
shotgun, rifle and pistol.
Check the receiver and barrel
The first commercially sucessful pistol was the Borchardt C-93. Designed in 1893 and became available in 1894. It is said to be the fore runner to the Luger P-08 as it was studied by the Luger's designer, Georg Luger.
Depending on EXACTLY what you have; 100-1000 USD