P239
It depends on which model and whether it is new or used.
No
a 357 cal. revolver cartridge WILL fit a colt 357 python. Also, a 38 special will fit a 357 cal. python. The 357 sig cartridge will NOT fit a 357 colt python................ The 357 sig cartridge ONLY fits the sig model pistol For clarity.....the sig 357 is a pistol. But, the 357 python is a revolver................
No
both good
No published sn data that I know of. Cal SIG and they will tell you.
No, Sig Sauer still makes that model.
You must contact SIG for an answer
It sounds like you are describing the Rainbow Titanium plated hammer. It is simply decorative. It may increase the value slightly, but not by more than a few dollars.
Impossible to answer without more information.
You will need to contact SIG to find out.
They carry Sig Sauer p226s in .45 cal