I'm now the proud owner of a fabulous 38b Jeffries, and just wanted to say that my experience buying it through Greg Jowaisas was outstanding. It was a significant purchase and Greg spent a lot of time answering my questions, following up phone calls, checking and tuning the instrument, and just generally being patient with someone new to the Jeffries and high-level concertina world.
I recommend Greg highly.
And here are some photos of the instrument. Has a nice sweet, but loud tone. As my mother would have said, "Great honk!"
I feel like I'm at the beginning of a long journey to see what this instrument can do.
Some interesting facts: it's an original C/G Jeffries sr instrument, has Dipper bellows, and is tuned in 1/5 comma meantone tuning (the chords ring).