Bulova 1927 Lone Eagle

Submitted by davep on
Manufacture Year
1927
Movement Model
10AN
Movement Date Code
Square
Movement Jewels
17
Movement Serial No.
276615
Case Serial No.
6636787
Case shape
CornerCut
Case color
White
Case Manufacturer
Bulova & American Standard
Crystal details
CMQ 425 21.1 x 21.1
Gender
Mens
Watch Description

1927 Conquerer/Lone Eagle I imagine , was missing the crystal ,seconds hand and strap , which I have replaced. It has suffered a knock at some time in its career as bottom right hand lug is damaged and slightly bent  but still takes a springbar and the case opens/closes as it should. Runs ok'ish but sometimes a bit temperamental  . Not sure about the crown. looks too 'brassy' ?

Bulova 1927
Bulova 1927
Bulova 1927
Bulova 1927
Conquerer ad
Geoff Baker
Posted February 13, 2026 - 9:51pm

Hmmm, I wonder if this is a Conqueror case with a Lone Eagle movement? Case s/n appears 1926 (Conqueror) while I think I see a 1927 (Lone Eagle) Movement date code? Either way, it's a survivor! 

Alex
Posted February 14, 2026 - 7:05am

Based on the case serial number, this watch was sold as a conqueror fitted with a later replacement 10AN movement (with non conforming crown) to probably make it tick again. 1926 Conqueror. 

neetstuf-4-u
Posted February 14, 2026 - 8:44am

Based on case date

1926 Conqueror

Nice watch.

mybulova_admin
Posted February 14, 2026 - 9:36pm

Case could be either from the Conqueror or Lone Eagle period. The 663xxxx is correct for both.

The movement I feel is not original but period and dated to the latter half of 1927.

I'd be more inclined to ID this as a 1927 Bulova Lone Eagle than a Conqueror. This is one case (excuse the pun) when we can say for certain that cases made in 1926 were used in watches assembled and sold in 1927.

The closed 9 and later cathedral hands also move it post Conqueror.

JimDon5822
Posted February 15, 2026 - 11:14pm

Tough call.   I will leave it to the early experts

FifthAvenueRes…
Posted February 16, 2026 - 3:34am

The correlation between the Case serial number and the Movement date code is a fairly recent discovery in Bulova history.

If this movement is a swap the person doing the work would need to have known this or being only one year off was very lucky as production of the 10AN covers a fairly lengthy time period. 

imo the watch is indeed 1927. 

 

davep
Posted February 16, 2026 - 7:57am

Sorry to have given you all a conundrum but always enjoy your exchanges!   Whatever is decided I realise that the supporting ad I posted is not really appropriate as it is for a solid white gold conqueror and with different scrolling.

neetstuf-4-u
Posted February 16, 2026 - 9:18pm

You've convinced me,

1927 Lone Eagle

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