Impossible to answer without a detailed description of all markings, finish, condition, accessories, box, papers, etc..
50-500 usd
You need the services of a gunsmith.
@ 1977
brand new it would be worth 750$.
Nice revolver
still looking for the value of my High standard sentinal deluxe nickel plated R-107 revolver.
There were dozens of different top break models made by Harrington & Richardson. Your best bet will be a search engine, such as Google. Select IMAGES, then Harrington & Richardson. The link below takes you to ONE such image- a nickel plated, top break 38 S&W hammerless revolver by H&R.
My father owned a 22 cal Colt, in 1936. It was hammerless, with a folding trigger. It was nickel plated. The name on the barrel said ¨´new born baby. I woul like to find one for my collection.
50-150 USD
the model 36 did come nickel finish. I had one. But don't recall seeing any with the shroud
The value of ANY gun is based on the exact make, model, and condition. The Baby Hammerless was not a derringer, but a very tiny revolver with a folding trigger. The value of those revolvers runs about $200 for a working specimen in fair condition. Do NOT attempt to fire this with modern high speed 22 Shorts- it was made for black powder cartridges. Better condition can equal higher prices.
Can't be answered without knowing who made it.