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
its about 6000 -12000
Best left to a gunsmith
the model is stamped inside the cylinder housing
NO
A pistol that fires .177 diameter pellets.
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.
Yes.
My grandfather's pistol used in ww1
Try doing a web search on "gun parts coporation".