The Colt New Service Revolver was first introduced in 1898 as stronger and larger Colt Model 1892 Revolver. This revolver was Colt’s first design with swing-out, hand ejector cylinder capable of firing large calibers such as .44-40, .44 Russian, .44 Special, .45 Colt and .455 Webley. The New Service would be produced in many other calibers including .38 Special, .357 Magnum, 38-40 such as this revolver, 38-44 and 38 S&W Special. Total production of Colt New Servic Colt only made 24,500 New Service Revolvers in both the Nee Revolvers of all types and calibers is about 356,000, and they were manufactured from 1898 until 1944. In 1918, when this particular revolver was manufactured,w ServiceThe Colt New Service Revolver was first introduced in 1898 as stronger and larger Colt Model 1892 Revolver. This revolver was Colt’s first design with swing-out, hand ejector cylinder capable of firing large calibers such as .44-40, .44 Russian, .44 Special, .45 Colt and .455 Webley. The New Service would be produced in many other calibers including .38 Special, .357 Magnum, 38-40 such as this revolver, 38-44 and 38 S&W Special. Total production of Colt New Service Revolvers of all types and calibers is about 356,000, and they were manufactured from 1898 until 1944. Colt only made 24,500 New Service Revolvers in both the New Service Serial # 320115 Manufactured 1924 ??