Recently imported Concertina Connection Peacock Duet.  This is Wim Wakker's 'mid-range' offering and is available in either Wicki or Hayden layouts which are effectively identical other than the keyboard being angled on the Hayden so that you need very long little fingers to play it - the Wicki is much more comfortable.  

42 keys; tenor C to G# above middle C on the left and middle C to high C (3 octaves above middle C) on the right.

Purchased to permit gaining experience with a range of concertina layouts alongside my English - and I can't afford more than two at a time, so this one has to go, so that I can try another. :-)

The Peacock currently sells new at $2900 + import duty + v.a.t.