German 20 button "English Pattern" concertina

[Theo]

This old German concertina is looking for a new home.  It is unrestored and has at least 4 broken reeds and missing buttons but may be of historical interest to a collector.   It has rosewood ends and a paper label where I can make out "English Pattern" which possibly refers to the fretwork.  The bellows papers are quite ornate.  Reeds look like nickel silver on long zinc plates on the right and brass on long zinc plates on the left.  It is two voice octave tuned  and pitched approximately AE.

 

 

 

 

If the images don't sow you can see them here