Yellow gold electroplate with an interior case marking I have never seen before "Bezel .0015 Gold Electroplate By Bulova 40 MIC Process". An interesting note is that the s/n is only 6 digits instead of 7.
Gold ring on light champagne face, with gold indices short and not overlapping the ring except for the 12, 3, 6 and 9 positions. Movement marked "M4" near the stem.
Running and keeping time on a correct period replacement Speidel band.
Another member of the original 30 series identified!
1964 Bulova 30 "DW"