Just curious, I love finding out the history of the weapons. E.g Wilhelm Bubbits working on Steyr, Glock, Caracal, BB6, Taurus TS9 and Tx22. What about Sig?

I think the names you are looking for concerning the P250 are as follows:

Adrian Thomele
Thomas Metzger
Michael Mayerl
Ethan Lessard

I was able to find a P250c that was made on the first day of production.

Made in Germany as a five serial set (frame, slide, barrel, box, & target) and it had seen little use.

The P250 had changed a bit during its production run.

Supersig, was your German 250 any different than the US 250s? Reason I ask is I thought the Origi al German guns actually had a DA/Sa configuration where they had a shorter sa reset?

I've had 2 P250s.

One was several years ago in 40. At the time I could get 40s for about $15 a box.

The one I have now is in 9x21. Right now I can get 9x21 for about $15 a box.

Two guns, same purpose. Best as memory serves me, the German version has a shorter trigger pull and the grip has a better feel to it. While this is highly subjective, it can also be said that the proprietary rail on the German version is not as adaptable as a Picatinny on the US version. I have no plans to use the rail, so I'm fine with either one.

The architecture of the P250 did not allow for a DA/SA version, but I couldn't rule it out if given a little CNC action for a weekend.

The P320 was designed by Adrian Thomele, Thomas Metzger, Michael Mayerl and Ethan Lessard in 2014 and put into production the same year.