Impossible to answer without a detailed description of all markings.
1976
You will have to call Colt
Try your local gunsmith or call/write Colt Mfg. Co.
By the markings on it and the serial number. Go to proofhouse.com or call Colt Mfg. Co.
Around the latter part of 1952.
COLT GOVT MODEL M1911A1 U.S. ARMY- MFG BY REMINGTON RAND IN SYRACUSE NY -
much depends on condition and mfg date.........from $400 to $1200 average
What is the value of an automatic colt caliber 38 rimless smokeless patented apr.20,1897. sept.9,1902 colt's pt. f. a. mfg. co. hartford,ct. u.s.a. 45731 ?
read the slide again. it probably says '45' not 48. also on the right side is a serial number. that will indicate date of mfg. date of mfg. and condition helps to give a value..................
Call Colt with the sn and they will tell you.
237571 is stamped on metal frame between the pistol grips
your Colt was made in 1880 in caliber 44. check Gunbroker.com under Colt single action for condition and prices