Herters was an importer headquartered in Minnesota from the early 1960's to 1979. The guns they imported were of good quality but strictly valued as shooters. I'd suggest you check one of the chain sporting goods stores like Dicks or Garts or Gander Mountain for the cheapest NEW .22 revolver and figure yours is worth about 2/3 as much if it is like new, 1/2 if worn but functional or nothing if it's rusted and broken.
Herter's imported revolvers made by Sauer & Sohn in West Germany. Try http://www.e-gunparts.com for parts.
It is worth around 200 to 600 dollar
A Lver Johnson model 1900 22 revolver gun can be worth $115 dollar or up. It all depends on the shape it is in.
No published data.
100-400 or so
20-100 or so
Depending on condition, $150-$200.
$235.00 = LNIB w/ Papers !
100-300 depending on specifics
Depends on the revolver.
20-60 USD or so