A Model 25 will be chambered either for 45 ACP or 45 Colt as it comes from the factory.
What model?
10-400 usd
No such revolver made by S&W
With no more than that to go on, the best I can give you is a range of 300-3000
The Model 19 Combat Magnum is a .357 caliber revolver with adjustable sights. It was available with a 2 1/2, 4, or 6 inch barrel, blued or nickel plated. This model was discontinued in 1999.
50-550 usd
S&W never made a 38 Magnum. A Model 36-10, AKA The 38 Chief's Special, which is chambered in 38 Special, is worth 100-400 USD
The High Standard Sentinel mark IV is a 9 shot blue or nickel plated revolver with wooden grips that was made by High Standard Inc. It came in a 2 and 4 inch barrel length. This revolver in good condition may be worth from 175 to 275 US dollars.
The 41 Magnum is the Model 57 or 58. The Model 29 is a 44 Magnum.
50-650 usd
0-500 usd
50-500 usd