Relisted at the same $2099 price, but with the following new text:
An experienced concertina player recently came by, played, and provided some feedback on this concertina, as follows. The instrument is very restorable. This instrument is mostly in tune relative to itself in its original pitch (from the 1800s, not A=440), but it has a few reeds that are out of tune. Also, all the notes sound when pulling the bellows outward, but two of the notes do not sound when squeezing the bellows in; this is easy to fix (we've repaired valves on other concertinas before) but I will leave this minor adjustment to the buyer, as the buyer will probably want this professionally restored. On conducting a "hang test" (squeezing both ends together then letting the concertina hang, holding only one end then the other, with no keys pressed), the bellows open slowly (which they should), but it seemed like it was taking dozens of seconds for the bellows her restored large-scale Crabb Duet concertina to fully open, while it took only ten seconds for the bellows on this one to open (in our opinion, this difference could partly be due to the fact that her large-scale Crabb's bellows are freshly restored and thus perhaps stiffer, but we can't be certain). Relatedly, although some of the notes on this concertina played as loudly as those her fully restored large-scale Crabb Duet, several did not. So some adjustment to the bellows or some valves likely will be needed.