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Waltham model 1877 grade question

mikedowner

Registered User
Mar 26, 2012
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I have a Waltham model 1877, serial number 2579298, and when I look up that serial number, it shows a grade of "A.T.& Co., W.W.Co.", and the name is No. 25. I am curious if there is a difference between A.T.& Co and W.W.Co. grades, or if there is a way to tell what grade the movement is.
It is a lever set, stem wind model from 1886. It does run, but it is losing a couple hours every day.hours every day. The dial also has some cracks.

20150824_215830.jpg 20150824_220351.jpg

Forgive the case, i bought the movement only and i only had a cheap case to put it in.

Thanks
 

topspin

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Dec 14, 2014
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If it's losing a couple of hours a day you should stop running it altogether until you (or the watchmaker of your choosing) have given it a service. It's like a car that's spluttering along, the more you run it the more risk of further damage occurring.

Great question about the grading... unfortunately, when the people at the factory were making and recording these watches, making life simple and easy for collectors >100 years down the line does not appear to have been very high on their list of priorities.
Tut.
 

Steven Mercer

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Nov 24, 2001
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There are a couple issues with the information in the serial number lookup that can be confusing if you don't know where the information came from. When you go to the serial number lookup, the information with the white background came from the hand written records, while the information with the gray background came from the book Serial Numbers with Description of Waltham Watch Movements, better know as the gray book. The gray book is a consolidation of information from the Waltham Records and runs of like watches were consolidated into a larger run to save paper and space in the book.

The information from the gray book on this run is:

2579001 - 2579700, 18 size, Model 77, Grade AT&Co. / WWCo.

The information from the Hand Written Records is:

2579001 - 2579200, size 18, Model 77, Grade WWCo.
2579201 - 2579400, size 18, Model 77, Grade No 25.
2579401 - 2579500, size 18, Model 77, Grade AT&Co. / Grade 35.

Waltham used a Name and Number system for like watches. The name grade WWCo. and No. 25 is exactly the same except for the barrel bridge name. The barrel bridge for WWCo. is marked Waltham Watch Co. and the No. 25 is marked American Waltham Watch Co. For the AT&Co. the equivalent numbered grade is No 35 with the No 35 barrel bridge is marked American Waltham Watch Co.

As you can see, your watch falls into the range of Grade No 25 and is properly marked American Waltham Watch Co.
 
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pmwas

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Dec 12, 2010
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I like the movement, very nice :) Have the mismatched hand replaced.
If it's loosing hours a day, it might be as simple as loose (and thus slipping) cannon pinion, or as bad as non original parts (hairspring/whole balance assembly/gears). Have it checked to find out what's wrong...
 

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