Some care seems to have been taken with the wirework framing the slots. The stem of leaves/flower/bud pattern is stereotypical and appears on a lot of small bric-a-brac from the early decades of the 20th century. The comparatively thin enamel inside the cloisons reminded me of Florence's lantern beads necklace, with their intricate little floral and bird designs.

http://www.beadiste.com/2015/01/puzzling-evidence-rare-deco-chinese.html