Canton Enamel Bowls or Ashtrays - signed 'China'

i picked these up at Goodwill today for a couple of bucks. They're pretty and i think kind of old too. some of them have felt rings glued to the base rim. one of them is larger than the others. the small ones are 3.75" across ant the larger one w/ the peaches is a little over 4 inches across.