Followed by:No, there is no such history or site like that for Smith & Wesson. I wish there were. History for SiGs is spotty or at least not published publically.
If the gun was proofed in Germany there is a date code. If not the only information you can get is from the serial number and only SiG has that information. Unfortunately they no longer give it out for free.
The manufacturers codes are often rather obscure. Some of them you can figure out but I've seen all kinds of odd ball codes.
I wish it were different. However, if you can post pictures of the gun there is a wealth of knowledge here on the forum and people are quick to help and provide what they know.
So, I would assume SIG customer service does have an actual production/serial number source that is not publicly disseminated.Do not confuse the two letter serial number prefix on your SIG with the two letter date code. They have nothing to do with eachother.
The two letter date codes are located on the bottom of slide near the muzzle area, it'll be accompanied by a couple of other proofmarks. These marks are ONLY found on handguns that were completely made AND assembled in Germany.
most new SIGs today are made or assembled in the US and thus will not have the German proofmarks or datecodes.
If that's the case with your gun the only way to find out is to call SIG with your serial number.