Unspecified / 2010
Watch and clock bulletin
The Smithsonian catalogs Watch and clock bulletin as periodicals in its Clocks and watches--Collectors and collecting records.
Journal of the National Association of Watch & Clock Collectors.
A CLOSER LOOK
The Smithsonian lists the object under Clocks and watches--Collectors and collecting and dates it 2010.
Journal of the National Association of Watch & Clock Collectors.
FOLLOW THE EVIDENCE
Smithsonian InstitutionWatch and clock bulletinOriginal explanation based on the sources above. Images carry their own reuse terms.