New Remington rand 1911a1

[Johnny Peppers]

From the site you noted:

Beginning of M1911:
1) Colt: S/N 1 to 3190 = April 16, 1912 to May 31, 1912

Colt serial numbers 1 thru 50 were produced December 28, 1911, and shipped January 4, 1912. I wouldn't put a lot of faith in that site when they made a mistake on the very first entry.

Clawson indicates Remington Rands 1471431 thru 1609528 were produced in 1944. Meadows agrees. If you don't have Clawson's Collector's Guide, 3rd Edition, I would highly recommend it.