Seth Thomas produced movements using five distinct winding and setting systems.

Most of these systems can be easily identified visually. The illustration below introduces representative examples of each system. The Higginbotham Stem-wound & Stem-set movement is the only one with no visible winding and setting components easily discerned as many of those components are between the top plate and the pillar plate.

Top row: Mechanism view for each visible winding system.
Middle row: Dial view for each setting system where visible.
Bottom row: Pillar plate showing winding/setting mechanism where visible.

Although time-setting is initiated through the pendant stem, the Higginbotham mechanism differs fundamentally from later pendant-set systems used in subsequent Model 5 production. The setting components operate through an internal cam and lever arrangement described in the 1891 patent. This differs from the simpler pull-out clutch mechanism found in later pendant-set movements. For clarity, this early configuration is referred to here as “stem-set” to distinguish it from the later “pendant-set” Model 5 system.

Winding & Setting of Seth Thomas Pocke Watches

https://www.seththomasfan.com/winding-setting