mid-century modern formed glass dish painted enamel gold pheasants, Fred Press or Gay Fad?

MCM vintage enamel glass dish with gold birds on blue, in excellent condition without damage or wear. Gorgeous color, very 60s! It's sized as a mint dish or a large ashtray, about 7" in diameter.

I couldn't see a signature on this piece – looks like one of Gay Fad's more mod style later designs, or Fred Press? I think Briard or Culver would probably have been marked, I don't think I've ever found unmarked Culver pieces.