I have a Cantori Diatonic Accordion in the key of ADG. This is the information I have been able to find out on this accordion. It was made by Mengasini Accordions in Italy and is a version of their D303 Model. This accordion was custom made for a Mengasini client in England who owns the brand Cantori. It has Cagnoni Reeds. The replacement cost on this Acordion i am told is over $5000. This is a 3 voice MML tuned box. It has 2 treble registers controlling 4 different treble tone changes and it has 3 bass registers controlling the bass side. The accordion is in very nice condition with some signs of use. I have attached a photo of the Mengasini D303 for comparison purposes only.