Hi Bob @mazzepabob, Thanks for starting this discussion. I had a good friend that I used to help with his computer related problems and software. He was an avid coin collector and used his Mac to keep track of his collection. This has been a few years ago but he had a small USB web cam device I think may have been a predecessor of the INS-3. He used it to look at the dates and mint marks to help grade the coins. It worked really well on his computer. They are really great for those of us who have difficulty seeing/reading and can use a computer. I thought I would share the link to the manufacturer's page for others to check it out.

INS-3 Overview - https://www.inswan.com/en/INS-3