Buy one of the books that has published serial numbers for that particular pistol.
You will have to call Beretta
You will need to call Kimber.
Call Colt
No known sn data published.
You can find out at Proofhouse.com in the Colt tables.
You will have to call Colt to find out.
1911 police pistol 32/20 double barrel
clerke is more junk then weapon. dangerous as the metal is not steel. no value. not likely to find date of manufactor...............
James Spacek book on Hi-Standard
This number falls onto a 1964 "HIGH STANDERD" pistol.
If you provide the serial number in your question then I can give you the date of manufacture.
By it's serial number.Go to proofhouse.com to find the date of manufacture.