The requirements needed of a railroad watch changed over time. In the beginning the railroads had no real standards. This had some very disastrous results due to watches gaining or losing time and when your industry depends on time tables you need accuracy. The early standards allowed 18 size watches with 15 jewels to be used. After a time the minimum became 17 jewels and 18 or 16 size. Eventually all 18 size watches were no longer allowed in service. This may have been more to do with fashion as you can get the same accuracy from a larger watch as you can from the smaller.
This 18 size Illinois A Lincoln 21 Jewel 5 Adj would have been a RR watch prior to the change to only 16 size.
Hampden John Hancock 21 Jewel 18 Size (if this was a Open Face)
Rockford 21 Jewel 18 Size
Elgin Father Time 21 Jewel 18 Size
In the American RR industry there was a focus on only allowing American made watches. This was mainly due to the fact that the American watch industry had the highest standards at the time and had the biggest sway on the market. This was obviously lost over time as can be seen from the current watch market where the dominance is Swiss, Japanese, and Chinese watch makers. Our industry essentially died in the 1960's. Every watch industry that gains the top spot feels it will last forever and do things that cause their own demise.
Once you get into the time of the 16 size requirement you do see some of the most iconic of the railroad watches. These are the watches collectors recognize instantly as a railroad grad pocket watch and already know the quality to expect. Most of these were 21 jewel 16 size open face with winding at 12 and lever set. They were all adjusted to temperature, isochronism, and positions.
Hamilton 992 21 jewel 16 size (early) single roller
Notice the lack of the 992 or double roller markings
Hamilton 992 21 jewel 16 size double roller
Hamilton 992B 21 jewel 16 size with melamine dial and stainless case
Waltham Crescent St 21 jewel 16 size
Illinois Bunn Special 21 jewel 16 size
Elgin BW Raymond 21 jewel 16 size Invar Balance
Waltham Vanguard 23 jewel 16 size
Elco Traintimer (Recta BD1) 21 jewel 16 size Lever Set Adj 6 Positions
- 19-23+ Jewels
- Lever Set
- Open Face
- Winds at 12
- 16 Size
- Micrometric Regulator (Pat Regulator)
- Bold Arabic Number Dial
- Adjusted