@ 20 yrs old
You will have to call SIG to find out. No published data.
SIG sn's are not in the public domain. You will have to call them.
100-1000 depending on specifics
Provide a detailed description of ALL markings.
You will have to call SIG to find out.
You will have to contact SIG and request a letter.
e Germany
For 12.95, SIG can give you a nice certificate with the information.
You can call SIG at 603 418 8102 and request a SIG OFFICIAL DATE OF MANUFACTURE CERTIFICATE . Cost is under 15 dollars
AFAIK, no.
You have to call SIG