This concertina has been soldType : English
Make : Lachenal
Model : 48 Key Treble
Price : £625
You can see this model quite often on Ebay, It has mahogany ends, bone buttons and brass reeds. Most often it comes with 4 fold bellows and -if you are lucky-5 fold as this one does.
That doesn't make it a better instrument-but it is more useful having more than 4 folds.
Also you can find this basic model on Ebay at £300-400 but that is usually unrestored-which means with old pads, old valves, old straps , worn bellows and in old pitch -which means that it won't play properly without hundreds of pounds spent on it and you can't play with other people until that money has been spent.
This one was bought from a restorer so has new pads, valves, straps-is tuned to concert pitch and has had a bellows rebind and repaper so you can play it immediately and with other musicians.
A great starter instrument at not much more than a Chinese plastic fake.
Also it can be traded in at the price that it is sold for in an upgrade situation. Try that with the modern accordion-reeded copies!