I have a relative who may sell me her father's WWII 45 which I have not seen. I am assuming it is a 1911A1 probably Ithaca or Remington Rand (guessing that Colts are less common). What is a fair price for GI 1911A1 in good but not outstanding condition? Is a Colt manufactured 1911A1 worth more? Did the Army actually let officers keep their pistols when they retired?