Serial #: 23,XXX
44 Special CTG
Appears to be a .44 Hand Ejector Second Model. Introduced in 1915 at s/n 15376, built on the N-frame, without the encased ejector rod and third lock features of the First Model (the famed Triple Lock).
Remained in production until 1940, though manufacture of this model was temporarily suspended (from Oct 22, 1917 to Dec 6, 1920) as a result of changeovers in production to meet wartime demand, and after the war, return to commercial production.
Most likely made in the early-mid 1920s, sorry I can't provide an exact year. Total production of this model was 17,510 revolvers. This example is the most commonly seen model: .44 Special with 6 1/2" barrel, fixed sights, blue finish and lanyard loop.
Certainly it is of interest to collectors though I won't take a guess as to value. Examples of this model chambered for other cartridges (.38-40, .44-40, or .45 Colt), or those with different barrel lengths, nickel finish, and target models with adjustable sights, carry value premiums to collectors.