Well, those are 5 chambers, not 5 cylinders. Bearing NO connection to the US Secret Service, the name was used by both A J Aubrey and Harrington & Richardson. Value is in the $100-$150 range. Think the term you were looking for was top break revolver.
around 1943. Value depends on condition,markings,history,etc.
made around 1915. Value depends on condition,markings,and history of the gun.
$50-$100 and up, depending on condition, markings, and history of the gun.
Impossible to answer without a detailed description of all markings, condition, finish, barrel length, caliber, box, papers, history, etc..
You will need to get a letter from Colt. They cost between 100-300 USD depending on exactly what you have.
It has multiple values as a shooter, a Colt revolver and a piece of RR history. Range from a hundred to multiple thousands depending on EXACT configuration, condition, accessories, box, papers, history, etc..
You can get a historical letter from Colt.
50-100 dollars.
Impossible to answer without a detailed description of all markings, features, barrel length, sights, grips, box, papers, accessories, condition, type of action, etc..
made around 1935. Value is decided by condition the gun is in, markings on the gun, and history of the particular gun.
made around 1930. Value is decided by condition,markings,and history of the gun. Start at $200 and go up from there.
No published history known.