Bulova 1957 Bulova 23

Submitted by gmmy775 on April 23, 2019 - 8:24am
A
Manufacture Year
1957
Movement Model
10BPAC
Movement Jewels
23
Movement Serial No.
-
Case Serial No.
6271952
Case shape
Round
Case Manufacturer
Bulova
Crystal Details
26.3mm
Gender
Mens
False
1957 Bulova 23 A watch
1957 Bulova watch
neetstuf-4-u
Posted April 23, 2019 - 9:37am

1957 Bulova 23 "A"

gmmy775
Posted April 23, 2019 - 9:47am

This one is in stainless.  I wish the previous owner had not polished the back to smithereens.  it is amazingly accurate.  I also have a similar '54 in  chromed base metal, the movements are a thing of beauty

Reverend Rob
Posted April 24, 2019 - 10:16am

These are good quality movements, not COSC, which would be 5 positions, but very few were at the time. During the late 50's and early 60's, watch testing for chronometer status was carried out by the Bureau Officiels de contrôle de la marche des montres and the mean daily rate limit was -1/+10, compared with today's -4/+6. (This must be achieved with a narrow delta in five positions) COSC was established in 1973. 

In 1957, a watch like this only lacked the certificate to be called a Chronometer. The definition at the time was:

a chronometer [was] a precision watch, which [was] regulated in several positions and at different temperatures and which had received a certificate [from the (“B.O.)]."

These were definitely not run of the mill watches, and in-house, USA made, to boot. 

1957 Bulova 23 'A'.

 

Andersok
Posted April 23, 2019 - 12:42pm

Bulova 23 'A' seems appropriate

jabs
Posted April 23, 2019 - 1:42pm

1957 Bulova 23 "A"

gmmy775
Posted April 23, 2019 - 4:33pm

Hi Reverend Bob

That is very illuminating info.  This particular watch is perhaps as accurate as any I own.  not sure how many of these movements I have, but a few.  the 6 adjustments has always appealed to me.  This one is more dead-on than (dare I utter it) my Omegas.  My first love is American movements, but I'm not over the top with that

Geoff Baker
Posted April 24, 2019 - 8:20am

Very nice, a classic piece.....

1957 Bulova 23 A

Reverend Rob
Posted April 24, 2019 - 10:18am

This is one of the few Bulovas that lists the six adjustments they are referring to right on the movement:

Heat, Cold & Isochronism, and three positions.

Kathy L.
Posted April 24, 2019 - 10:39am

1957 Bulova 23 "A"

Reverend Rob
Posted April 24, 2019 - 1:39pm

Here's a 1955 example I hadn't seen before, they proudly put it on the dial: