It sounds very nice. Has a nice Art Deco look to it! There are 120 buttons and a total of 41 piano keys (24 white, 17 black).
Excelsior Model 310 Piano Accordion Italian Made with Hard Case Tested
Excelsior Model 320 Piano Accordion Made Italy Vintage w/ Hard Case For Repair
Vintage Leather Cased Mastertone Silver 16-Button Piano Accordion & Sheet Music
Excelsior No.400 Full Size Piano Accordion 41-Key 120-Bass Made in Italy W/ Case
Excelsior Model 603 Vintage Piano Accordion Accordiana Made In Italy, Tested
Boosey & Hawkes ‘Artia’ Excelsior old Cello for restoration
