Institutional Name
Collectors use 'Swedish Federation' because of the dial markings or association, but no contemporary source has confirmed this as an official model name.
Koopman-Like Components
The movements and faces closely resemble those used in Koopman clocks from the mid-1940s through the late 1950s, suggesting shared sourcing or rebranding.
Documented Use
A photograph of Swedish champion Börje Jansson around 1972 supports serious Swedish chess use, though it does not establish the date of manufacture.
Historical Significance
The clock's Swedish institutional identity is secure at the level of use and branding; its exact manufacturing chain remains open.