Guy Cole has a bass at Robertson's, which he patterned after a Giovanni Dollenz model. What do you know about Giovanni Dollenz? My google searches led me to many auctions for violins and a
book introduction indicating that "Giovanni and Giuseppe Dollenz [were]... Nineteenth Century Violin Makers from Trieste." Perhaps, Guy meant that he patterned it after Dollenz's violins? In any case, more information on Dollenz and any pictures of a Dollenz bass would be much appreciated.
On a related note, what characterizes basses from this time period? Body type? Scroll? F-holes? Can one generalize about basses from this area/time period?