I've recently been lucky enough to work on two Lachenal Bass anglos, both originally sold into Concertina bands. The first, in Bb/F is internally inscribed "Pride of Wooton" and has a Liverpool suppliers plate inset into the end. Serial number 174,914.
The second went from Astley's Concertina Emporium, in Oldham, to Tottington (Lancashire) Concertina band, and is in C/G, serial 151,069. The current owner has some history of the band, which he believes was formed around 1900 in Tottington Mill, moving eventually to a band room in Sunnywood Lane, Tottington. It was recorded as late as 1938 by the BBC, performing in concert along with the Brittania Coconut dancers.
Both are great fun, and go some way to explaining Cormac Begley's upper body development.... I wondered if anyone has any history relating to either of these bands.