sig-saur
You will have to call Sig to find out.
http://www.sigsauer.com/CustomerService/documents/SIGARMSP232OM.pdf
50-400 usd
Sig p250 no its a Sig p226
No. Standard ammunition in the correct caliber for the gun. However, ONE of those calibers is the .357 SIG auto, and other .357 cartridges do not interchange with that.
I am pretty sure all Federal Agents (FBI, etc.) carry Sig Saur 9 mm.
No.
Need all markings.
Sig, iirc
The Sig.
Karl Saur was born in 1902.