18 Size Illinois Pocket Watch with Bay State Movement...

Dave Coatsworth

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Beautiful example! Your watch is a model 3, grade 103 that was made in 1881. It has a jeweled "5th pinion", which is desireable. (This is the jewel next to the Chalmer's regulator.) Sometimes this jewel is matched with a jewel on the pillar plate, making a 17 jewel movement and sometimes it is not. This is recorded as being a mixed run, so both 16 jewel and 17 jewel movements produced. I would be willing to bet that it is 17 jewel, as my research has shown the vast majority of these jeweled 5th pinion movements are 17 jewel. (I have about 50 examples and only about 4 are 16 jewel.) But, you would have to pull the dial to be certain.

Here is a thread that is dedicated to jeweled 5th pinion movements: https://mb.nawcc.org/threads/jewelled-5th-pinion-model-3-illinois-movements.40049/

Here is one of my 'Bay State' examples. It is a 17 jewel.

Illinois320870Mvmt.jpg Illinois320870Dial.jpg
 
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Matzadah

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Aug 4, 2002
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Beautiful example! Your watch is a model 3, grade 103 that was made in 1881. It has a jeweled "5th pinion", which is desireable. (This is the jewel next to the Chalmer's regulator.) Sometimes this jewel is matched with a jewel on the pillar plate, making a 17 jewel movement and sometimes it is not. This is recorded as being a mixed run, so both 16 jewel and 17 jewel movements produced. I would be willing to bet that it is 17 jewel, as my research has shown the vast majority of these jeweled 5th pinion movements are 17 jewel. (I have about 50 examples and only about 4 are 16 jewel.) But, you would have to pull the dial to be certain.

Here is a thread that is dedicated to jeweled 5th pinion movements: https://mb.nawcc.org/threads/jewelled-5th-pinion-model-3-illinois-movements.40049/

Here is one of my 'Bay State' examples. It is a 17 jewel.

View attachment 709214 View attachment 709215
Thank you Dave for all the detailed information; I'll make sure to save it for later reference.
 

John Cote

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Would anyone be able throw some light on this pocket watch, origin, age, # of jewels, etc...?
Beautiful and pretty high grade watch. Also wonderful to find it in such a fine and original looking case.
 

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