Unfortunately the calibre character is shared between calibre families. For example B is shared between the 5X GPS Solar calibres, and the 4R automatic ...

Seiko appears to have started a new numbering scheme with model numbers starting with H and not S as used for many decades. The first model, introduced ...

I have previously created a single poster showing all of the models, but as the number of releases has increased it necessitated either shrinking the ...

Another interesting model shown in this supplement is the thin Diamond Flake pocket watch. The Diamond Flake was introduced as the world’s thinnest ...

This catalog introduced a new model numbering system, replacing the original system where watches had a number allocated consisting of the catalog ...

References  Patent Publication No. 52-123270, (1976), Accessed 2026/04/07  Patent Publication No. 52-106763, (1977), Accessed 2026/03/30  Patent ...

The catalog also introduces the Custom V2 “Blackie” models, with black cases and dials. These were Japan’s First All Black Watches and were introduced ...

The 1971 No.8 Citizen dealer catalog introduces various new models and you can see the continuing evolution of the range. At the start of the catalog is ...

A step below the Glorious Citizen models were the Citizen Highness range, that was also introduced in 1971. These models utilized high beat, 36,000bph ...

The event consisted of various displays that highlighted all of the newly announced models, a couple of hands on touch and try areas, and a presentation ...