Well, for what it's worth the B/C box arrived. It cost $700. It's made in the Czech republic. I will post some pictures tomorrow. It is "hand painted" which means some extremely untalented Czech worker painted some flowers on it - but other than that, it's quite nice.
I can't play it at all - so maybe after I learn how, I'll find out it's not good - but for now (I play just Piano accordion) the sound is good - in tune - clear - it smells good and is light.
Watch for photos.
THe tuning is musette.