Graphic symbols on early movements

does anyone know what they mean these graphic symbols on the movements of the twenties

bobbee's picture
bobbee
Posted July 19, 2014 - 4:37am

Some thought it referred to the ligne o(size) of the movement, but as can be seen, the ligne is otherwise marked in some.

Lost in the mists of time, as is true of so much Bulova information.

jabs
Posted July 19, 2014 - 4:54am

Panel Member

pity, time is relentless and without documentation erases a lot of information :(

William Smith's picture
William Smith
Posted July 23, 2014 - 12:36pm

Club 5000Panel Member

Great pictures....and a great mystery.  I've seen various markings on these older movements.

bobbee's picture
bobbee
Posted July 24, 2014 - 5:37am

I asked if anyone knew what the marks could be on WUS, where there are many experts posting regularly including Roland Ranfft, and none seem to know. At least, none have answered as yet.

 

http://forums.watchuseek.com/f11/bulova-movement-marks-1059292.html

jabs
Posted July 24, 2014 - 9:56am

Panel Member

good attempt but it seems that weall in this equally :(

Reverend Rob's picture
Reverend Rob
Posted July 24, 2014 - 1:43pm

Panel Member

I suspect this was an in house marking by Bulova, to either identify the ebauches and/or indicate what would be done to it by way of modifications. Bulova invariably always modded the movts, and finally took this all the way, finally to the US built ones. 

We're only guessing here, but my bet is on a factory series or code that was used to ID either the mods, or perhaps even to what lines of watches they were destined for. Another possibility is that the ebauches were themselves specially marked upon shipment to Bulova, and may be factory codes that ID'd the customer and what the customer had specified, the customer being Bulova. So FHF might make an ebauche which already was specially set up for balance mods or a top plate mod, and this was their way of keeping track in the factory. 

All speculation, of course. 

William Smith's picture
William Smith
Posted July 24, 2014 - 1:48pm

Club 5000Panel Member

... but good speculation, as you are formally trained and work in this field.  ...and have seen/held oddles of these oldies...