I've come across this concertina that might be of interest to people. Inside i found the stamp of T. Bostock (maker) in it. I know he had a connections with the Crabb family which is very evident. The levers are rounded with the middle flattened and the levers are parallel but rotated by 60 degrees on either end. I'll put up a few pictures of the fretwork..lovely little box. C/g. Just thought it might be of interest. Was it bought from (or in parts) from Crabb and sold on?