I'm finally ready to upgrade from my Bastari and have decided what I want: a 56 metal button, wood ended, Wheatstone Aeola tenor-treble-riveted action, brass reed pans, A=440, preferably from the period 1910-1930 or so. Playability and tone more important than appearance. Any leads/help on this project greatly appreciated. I'm monitoring online the Button Box, Concertina Connection, Hobgoblin UK and Barleycorn Concertinas. Any others out there?