Hello, I am Trevor, a menber of Boughton Morris
http://www.boughtonmorris.uwclub.net/
a former Musician has died & his widow has asked me to help her.
She has his concertina & would like to know more about it
I am not a musician, & our current musicians do not play concertina's
I believe it is an Anglo (differnt note pull/push)
The only identification marks are on the handle
ENGLISH MAKE Trade Mark see photo 58