I'm not surprised that Peter Coggins found the Mills Violano-Virtuoso
recordings made and sold by Carrousel Music, Chambersburg, Pa., to be
of very high quality. All its recordings are top-notch.
Dr. Bill Black, its owner, is in a position where he can access and
record some really wonderful mechanical music machines right after they
come out of the restoration shop. You won't find any limping melodies
or missing notes on Carrousel (note the two r's) Music recordings.
Carrousel Music has its own web page, though I don't have the URL in
front of me right now.