jagarch

So what do you guys think? It's essentially tuned to G/Dmi in the bass and F#/C# in the treble? Is this unheard of? A custom job for a contemporary classical piece? Someone was retuning it, got half way through and quit? Part of it went out of tune precisely a half step flat? What's going on here?

Hello all, I'm a musician but not a concertina player. I have a flea market find that I'm curious about. It's a 20 button Bastari, marked Bastari Ancona Made in Italy The instrument plays well and is in tune but is tuned as follows top row GG - D - G - B - d - ||| f# - a# - c#' - f#' - a#'' ---- push D - F - A - c - e - ||| f ---- g# - b --- d# -- f' ---- pull bottom row D - A - d - f - a - ||| c# - f' - g# - c#'' - f'' ---- push A - c# - e - f# - a# ||| c' - e' - f#' - a#' - c'' ----- pull forgive me for messing up octave designations. Is there a name for this tuning or is it a one-off or custom tuning? Why would someone tune like this? Assuming it has no practical value to a beginning concertina player (does it?) is it possible to have it converted to standard G/D tuning easily and cheaply? thanks in advance, j