Settimio Soprani piano accordion (sold), with 41 key 120 bass. This used instrument has been serviced and tuned. It has four voices on the treble side (LMMH) with seven couplers to mix the reed sets. The couplers are labelled bassoon, bandoneon, organ, master, musette, oboe and piccolo. There are two switches on the bass side (for the low reeds). It is in excellent condition (as you can see from the photos) with a small amount of wear to the black treble keys in the middle of the keyboard. The instrument has an astonishing range and is extremely powerful (see the video demo below.
Piano accordion for sale from Settimio Soprani. This is a beautiful 37 key 96 bass instrument, with three treble voice (LMM), seven coupler, and 5 voice two coupler on the bass side. This instrument was made in the 1980s and has been tuned, with some re-valving on the right hand. The 37 key keyboard is ideal for someone who wants most of the range of a full size 41 key instrument, but in a smaller more manageable package.