Transparent Cased Beta21 by Ebauches SA

Others ESA Ebauches SA Beta21


A rare Beta21 movement of the movement-manufacturer Ebauches SA, who was a main driver of the CEH Beta21 project, cased in a transparent 'Prototype' case. The movement works fantastic and precise and still holds the original electronics module with the initial integrated circuit, the tubed large quartz running at 8'192Hz and the hexagonal trimmer.