You must contact SIG to find out.
Sig p250 no its a Sig p226
2004
Follow the instructions provided by SIG
In this area (the mid-south) they go new for around $550-$650 depending on where you buy it.
The button on the back of the slide of a SIG Sauer P250 is the slide release lever. It allows the shooter to manually release the slide after inserting a magazine or when clearing the firearm. Pressing this button enables the slide to move forward and chamber a round, facilitating quick operation and reloading.
You will have to call Sig
Contact Craft Holsters, DeSantis, Uncle Mike's and Optics Planet. There are several out there.
SIG will tell you if you call
If you call SIG they will tell you over the phone
You will have to contact SIG to find out.
No published sn data that I know of. Cal SIG and they will tell you.