The Model 1911 is a semi-automatic pistol chambered in .45ACP. The Model 1917 is a large frame revolver also chambered in .45ACP but using half-moon or full-moon clips to hold the rounds.
A Model 21 in 45ACP can run from 100-550 USD
If you mean the standard Caliber of a 1911 model colt pistol,then this was chambered in the caliber .45ACP.
Check the cylinder.
The H&R model 925 second model was made from 1964-1972,The third model was made from 1973-1978.The first model 925 defender was produced from 1946-1947.You did not state which model defender you have?
Best left to a gunsmith
If the question you are asking is about a colt model 1911 semi-auto 45acp? then with that serial number your colt was a commercial model made in 1916.
A Colt Lightweight Officer's Model in .45ACP caliber. It is small and light and carries seven rounds.
100-800 usd
$1100 as new and $725 excellent (Standard Catalog of S & W, 2006).
The stanard Landrover Defender is equiped with two seats. There is a station wagon model that comes equiped with 4-6 seats, your choice.
1988-1990