Dear Stephen and Pete,
Sorry, I realise I should have included a photo in my first message. Here it is, anyway.
Apart from the labels from H. Dean, there are no clues who made the instrument on neither the outside nor the inside of the instrument. However, the number 15000 is visible through one of the carvings at one end of the instrument.
I realise this was never an expensive instrument, but it is in playable condition.
It has one blemish: a previous owner fro some reason painted the bellows black!
Yours,
Ole