I've recenly acquired a new hybrid anglo concertina with a Jeffries layout, and I'm not convinced that two of the buttons are sounding the notes they should.
I thought on a Jeffries the C#/D# (push/pull) should be on the right hand '2A' button in Gary Coover's notation.
This means that if I play 3A on the left then 2A on the right should play an octave higher on both the push and the pull, sounding pretty consonant being an octave apart.
This isn't the case as the concertina appears to have the C#/D# on the 1A (like I'd expect on the Wheatstone/Lachenal) with the 2A being the inverse - D#/C#.
Am I mistaken or is this concertina neither Jeffries or Lachenal? Is this another common layout, or was it just put together with two(four?) of the reeds in the wrong place?
All of the other buttons match up with the charts I've seen.
I'm fairly new to the concertina but play guitar, banjo and fiddle, so I'm got a good ear and can read music, etc. This isn't my first instrument.
Any advice appreciated, thanks!