These are annual clocks - 400-day clocks.
The name "annual" is derived from the fact that mechanical models only had to be wound once a year.
All-brass, gold-plated design, decorated with chiseling.
Enamel dial decorated with hand painting.
A unique torsion / torsion pendulum that does not swing, but slowly rotates around its axis on a thin steel string.
The glass cylinder (stilt) is not just for decoration, but protects the extremely sensitive pendulum from dust and the slightest draft.