I have listed on eBay UK an early Colt Manual for the 1911 plus, with it, some other manuals or leaflets on early Colt pistols and a Browning 1910. I'd estimate they date from before 1919? As on one it is stamped for an address the gunmaker Linsley Brothers of Leeds, Yorkshire occupied from 1900 to 1919.

Search eBay UK on item number 143656975187 or search using words Colt 1911 .45 Government. Listing ends Sunday 19 July 2020. I am happy to send those items in that listing to the USA. The card that says Oyster is a London Underground travel pass of credit card size for size comparison.