Crabb 79 key Maccann Duet, eight sided with metal ends and metal buttons. Steel reeds. The eight-fold bellows were made by Rosalie Dipper in 1996. The serial number is 18366.
The owner of the concertina gives it’s story:
About the Crabb duet concertina : my brother bought it from Crabb in the second half of the 70’s. I bought it back from him few years later as he switched to chromatic accordion.
In 1989, the bellows corners were yielding somewhat, so I scheduled an appointment with (Neville) Crabb in London to get new bellows and some minor problems fixed (tunings among others). I phoned him on the Thursday to make sure that everything is all right, and the next Monday I stood before his shop closed. He had died in the meantime!
I carried on playing with the instrument as it was till 1996, when I took it to Colin and Rosalie Dipper, who made the needed repairs, including new bellows.
The following year, Colin called to tell me that someone wished to sell a Wheatstone duet, I bought it and used only that one till now : a sweeter sound, with the right hand though a bit weak compared with the left one, as I play usually a lot with three-notes chords. But I made do with it all these years and the Crabb remained in its box all this time.