Leonard

This confusion about bi- and unidirectional was spoken about before in this topic:

Harry Geuns does bandoneons and concertinas. He lives in Molenbeersel, just over the Belgian border, south of Weert. www.bandoneon-maker.com

Don't forget to take a look at his footbass! https://bandoneon-maker.com/foot-bass/

Stephen, do you mean that that the models 1 to 10 all have bone buttons?

Tell us more...

See: http://www.horniman.info/

See this:

Red arrow: not B11, but Bn Bn 1140 = Batch number 1140

Problem fixed now.

Great! Who's the other player?

And the strap lock on the handle looks very similar as well.

No. I don't know about McNeela, but the Rochelle is designed and developed by Wim Wakker of CC, to be produced in China.

Good to hear from you, sam.

Have you seen Paul Draper's little invention?

As played in 2008 on youtube by Marien Lina, member on C.net. His comment on this tune: Blaeu gaeren en koper draet" a Dutch tune known from `Hollantsche Boerenlieties en Contredansen` part 1 (1700), also known as "la boree" or ´Bourree de la France`, It has parts in common with the english ´parsons farwell` from the Playford Dancing Master of 1653. it also has a lot in common with a melody in "Valerius´ gedenck clanck", 1625 ("hij die tot een opperheld"). It is a long time ago that melodies of existing popular street songs were used for promoting christian texts. This suggests that the song was a well known Dutch street song before 1625.