I just found this figural glass clock case with New Haven insert in a house here in the mid-Atlantic (US).
The cherub design is nicely moulded in white opaque glass and has a satin / acid finish. (Sorry about the poor picture detail.)
The case measures 6 1/2" long, 4 1/4" deep and 5 1/2" high.
I've been unable to reference in any of the popular 1920's / early 1930's US glass company catalogs (Cambridge, Fostoria, McKee).
Any ideas on what direction I should be looking?