This is an older Bayan button accordion, I can't make out the name on the badge.  Plays, good sound and volume. Same note push-pull so I am assuming Bayan? Not my area of knowledge , sorry. Previous owner put key stickers on many buttons.  Some scuffs to the body but nothing serious. No signs of repair. Some leather valves not lying flat, some exterior scuffs, case a bit tight fit. May need slight tuning, revolving at some point  due to age.  The reed bank switch works properly. Good straps. Case is worn but functional.