The wine vendor. Modern European laws that regulate the consumption of alcohol guarantee that this is one job that is gone forever. (Not that I haven't looked!)
Chestnut vendor. This guy still exists and is as popular as ever. The winter months are his season, and there is nothing like finding someone selling hot, roasted chestnuts on a chilly day. He still looks pretty much the same, and the equipment hasn't changed much, either. The brazier is the same, and you can still get warm standing next to it. Interestingly, there is another item sold from the brazier—corn on the cob (see this drawing.) I haven't seen one of those vendors recently, but I imagine they're around.
The snail vendor.
There is a group called "Slow
Food"in Naples. They don't mean slimy critters
that run so slowly they can't escape, but rather
service that is so slow they can call it "leisurely"
and "elegant" and pretend that this is the way
people used to dine before the rush-rush present day
of American fast-food. Of course, the ancient
Romans—as research has
shown—ate on the run a lot.
This drawing presents something else, however—snails. I have never seen anyone eat a snail in Naples, much less sell them on the street. There might be a specialized restaurant, the way they have for places that sell horse meat, but I have not seen one. The logo on the sign outside would be a snail, I suppose, but the above-mentioned Slow Food peoplerest of series from top of this page
have preempted that one. As far as I know, they don't serve snails.