2500 Euros is about the going rate for original MP44's here in NZ(NZ$5000). It looks very tidy and would be one of the batch of ex-East German
Border Guards rifles that were released onto the market in the 1980's. They were all refinished. Is it still select-fire or converted to semi-auto? They are good collector's items and worth keeping if you get them at the right price. Sadly, the supply of the 1970's/80's East German steel-cased ammo dried up some years ago.