The following is from the discussion thread for this dish and is a post by Gene: " I think the bottom is a Cambridge #689 with the lid shown on the Cambridge #683 3 pc vanity. The bottoms are on page 16 of the 1927-1929 cat. The vanity set which may be your candy dish but you can not see the bottom is on page 61. The color is most likely Cobalt Blue II but could be Ritz Blue as these two are very difficult to determine unless you hold them side by side or use a black light. Both colors were made in this time period."