Herter's was an importer, not a maker. Take it to a gunsmith
there is a flat holding pin just ahead of the cylinder, it must be pushed out to slide the cylinder off
Herter's imported many types of firearms. 50-100 or so.
Try e-gunparts.com
Best left to a gunsmith
its about 6000 -12000
the model is stamped inside the cylinder housing
NO
A pistol that fires .177 diameter pellets.
Yes.
yes i have one. i am trying to find out some info on it also. the symbols are on the barrel right in front of cylinder.
My grandfather's pistol used in ww1
No it will jam in the barrel.