There was some further discussion in that thread, including mention of a duet concertina described in the patent, which I think would deserve its own topic in this History subForum.
The auction included some external photos of the instrument, which show unusual features (differing from "concertina standard"), but the only internal photo was of the top of one reed pan. For the curious and because the auction details may eventually disappear from eBay, I'll shortly be posting those photos in this thread.
Meanwhile, Neil Wayne -- who won the eBay auction, -- has asked me to post for him a few internal photos of the instrument, so I'm doing that here. They clearly show some of the "improvements" in the internal mechanism which are described and illustrated in WW's patent.
Edited by JimLucas, 23 May 2012 - 01:08 PM.