Read a review (German) of a Geneva Nylon Jazz Model here...
These models have a 48 mm nut width. The fretboard is radiused to 16" for playing comfort and has M.O.P. position markers in the side.
As an addition to the piëzo system, a DPA 4099G condenser microphone is a good option. The Geneva Model is available without electronics upon request.
Deluxe Gotoh 510CP or hand-made Rodgers machine heads are optional.