What is a Herters 22 revolver worth?

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.