In 1956, shooting and gun-collecting fraternity succeeded in convincing Colt there was a market for a re-introduced SAA. Revolver was brought back in the same external configuration. Only changes were internal. Basic specifications as to barrel length and finish availability were the same. Calibers available were .38 Special, .357 Magnum, .44 Special and .45 Colt. Serial number range of re-introduced 2nd Generation Colt is #000ISA-73000SA. Values are established by four basic factors: caliber (popularity and scarcity), barrel length, finish and condition. The .38 Special is rarest caliber; .45 Colt and .44 Special are more sought after than .357 Magnum. Special feature revolvers such as 350 factory-engraved guns produced during this period, must be individually appraised. Ivory situation in the world today has become quite a factor, as ivory grips are found on many SAAs. Remember as always, when in doubt secure a qualified appraisal. NOTE: Values shown are for 5.5" barrel models. Add 15 percent for 4.75"; 10 percent for 7.5"; 20 percent for nickel finish; $250 for ivory grips.