Bulova 30 Jewel micro-Rotor 12EBACD SS 417660 N2/M8
Width w/o Crown: 37.35 mm
Length: 41.00 mm hidden lugs
Depth: 6.65 mm wo/crystal, 10.10 mm w/crystal
Lug Width: 19.00 mm
Crystal: 32.05Dia mm, in watch. Domed acrylic
Crown: 4.00Dia mm, signed with a “C” (Caravelle replacement?)
Inside case back: Inscriptions: R/; 7283; Swiss
Engraving on outside case back: BULOVA; 417660; N2; Stainless Steel
Movement: 12EBACD Automatic Micro-Rotor 30 Jewel
Engraving on Movement: BULOVA WATCH CO; 12EBACD; 30 Jewels; Swiss; M8. Under Balance Wheel: SX; D
Notes: This is my third example of this model, and the second with the avocado green dial. I am not able to resist this watch if it is in nice condition and isn’t ridiculously priced. Another reason for the acquisition is that I am developing a theory about this model, which apparently was not well documented by Bulova. All three of my watches contain, arguably, the best version of the Buren 1321 ever produced. From what I have seen, Bulova required Buren to install the larger jewels on each end of the self-winding works, even on the 17 jewel version.
My theory is that this particular Bulova model, which has exceptional build quality and better materials than usual for Bulova, was a one year only statement watch. As examples, the case back is three times the weight of a typical Bulova, each movement was secured to the case with dedicated polished case clamps, and the back o-ring is of better quality…all three of mine are still usable.
I embarked on this examination due to the unusual combination of a 1968 movement with a 1972 case. The three I have each are of this same configuration. There is another green dial example on the bay that has a similar serial number and an identical N2 case, however there is no photo of the movement. It is listed as a 12EBACD though, and it is likely also an M8 date code. At $728 Canadian I am going to have to pass on that one.
So why produce this departure from the typical Bulova date scheme? I think it is the circumstance that Bulova found itself in 1972, perhaps having a quantity of 1968 Bulova badged Buren 1321 movements without cases. Bulova was getting re-badged 1321 movements from the Swiss company Buren since at least 1964, along with American watchmaker Hamilton, Swiss companies Baume-Mercier, Bucherer,