The database answered instantly:
It does not cover post-1941 models (like the Trailsman 66 or Supershot Sealed Eight). For those, you need specialized forums. Iver Johnson Revolver Serial Number Database BEST
No, you cannot call a customer service hotline at Iver Johnson to ask about your revolver. The factory is silent. But thanks to decades of obsessive hobbyist work—specifically the unparalleled database of Bill Goforth, supported by online communities and reference sites like Proofhouse—you have access to the available to mankind. The database answered instantly: It does not cover