![The evolution of the Hamilton railroad grade pocket watch. A 1912 992 on the left and a 1946 992B on the right. : r/pocketwatch The evolution of the Hamilton railroad grade pocket watch. A 1912 992 on the left and a 1946 992B on the right. : r/pocketwatch](https://preview.redd.it/the-evolution-of-the-hamilton-railroad-grade-pocket-watch-a-v0-3twkh82agxib1.jpg?width=1080&crop=smart&auto=webp&s=806458fe4e329d4ce33e6fe4fc617b5afafb0f95)
The evolution of the Hamilton railroad grade pocket watch. A 1912 992 on the left and a 1946 992B on the right. : r/pocketwatch
![Antique, Serviced, Railroad Hamilton Grade 992 B, 21 Jewel Pocket Watch. 1965 With Wood Box and Stand. - Etsy UK Antique, Serviced, Railroad Hamilton Grade 992 B, 21 Jewel Pocket Watch. 1965 With Wood Box and Stand. - Etsy UK](https://i.etsystatic.com/6711156/r/il/9d857d/4408127521/il_fullxfull.4408127521_76tg.jpg)
Antique, Serviced, Railroad Hamilton Grade 992 B, 21 Jewel Pocket Watch. 1965 With Wood Box and Stand. - Etsy UK
![Watch Review: Experiencing 130 Years Of History With The Limited-Edition Hamilton Railroad Pocket Watch In Lancaster, Pennsylvania | aBlogtoWatch Watch Review: Experiencing 130 Years Of History With The Limited-Edition Hamilton Railroad Pocket Watch In Lancaster, Pennsylvania | aBlogtoWatch](https://www.ablogtowatch.com/wp-content/uploads/2022/11/Hamilton-Railroad-Pocket-Watch-2.jpg)
Watch Review: Experiencing 130 Years Of History With The Limited-Edition Hamilton Railroad Pocket Watch In Lancaster, Pennsylvania | aBlogtoWatch
![Hamilton Pocket Watch Railway Special Grade 992B Housed in a Hamilton 10K Yellow GF Model A Case circa 1949 - The Pocket Watch Guy Hamilton Pocket Watch Railway Special Grade 992B Housed in a Hamilton 10K Yellow GF Model A Case circa 1949 - The Pocket Watch Guy](https://www.thepocketwatchguy.com/wp-content/uploads/2019/05/1_18_5.jpg)
Hamilton Pocket Watch Railway Special Grade 992B Housed in a Hamilton 10K Yellow GF Model A Case circa 1949 - The Pocket Watch Guy
![Hamilton Railroad Grade 992 Housed in the Popular White GF Bar Over Crown Case - The Pocket Watch Guy Hamilton Railroad Grade 992 Housed in the Popular White GF Bar Over Crown Case - The Pocket Watch Guy](https://www.thepocketwatchguy.com/wp-content/uploads/2021/06/4a-1.jpg)