Very cool news! I knew that eventually an Optigan® TV commercial would turn up! Youtube user chumrain writes this:

Finally…one has been found (I know that several people have been searching high and low and haven’t come up with anything). Here is a long-lost television commercial for the Optigan®, starring actor Carl Betz. This is a transfer of a 16mm print made using a video camera and projector, so while the film is in good shape, this video will leave a lot to be desired. I plan to have it professionally transferred at some point. Despite always being on the lookout for any Optigan-related media, I acquired this one accidentally when I purchased a lot of film commercials on eBay that came from the estate of Cherry Hill Productions. This commercial just happened to be one of them.

Mike LeDoux the other Optigan® commercial to me several times. This one is definitely the earlier of the two, as the Optigan® is clearly in a pre-production state. Apparently it’s notable as being the first ever TV commercial for a musical instrument, though I’m not sure of the accuracy of that claim.