An emblem of Japanese precision from the golden age of mechanical watchmaking.
The Citizen Crystal Seven 33 Jewels is a mid-century automatic that epitomizes refinement and reliability. Introduced in the late 1960s, the “Crystal Seven” line marked Citizen’s innovation in using hardened mineral glass — a first in their lineup. This reference, powered by a 33-jewel automatic movement (Cal. 5207), delivers smooth timekeeping with day-date functionality at 3 o’clock.
The silver sunburst dial, framed by faceted indices and dauphine hands, captures the minimalist design ethos of the era. The case’s gentle curves, Citizen-signed crown, and original stainless-steel bracelet with signed clasp underscore the watch’s authenticity and period-correct appeal.
A timeless companion that bridges everyday utility with vintage Japanese engineering finesse.
Key Features
- Automatic movement, 33 jewels (Cal. 5207)
- Day-Date display at 3 o’clock
- Stainless-steel case and bracelet
- Silver sunburst dial with faceted hour markers
- Citizen-signed crown and clasp
- Reference: 4-520751 Y
- Made in Japan (3077Y engraving)
![Citizen Crystal 7 33 Jewels-[37mm] Automatic (Ref. 4-520751 Y)](http://www.therevolverclub.com/cdn/shop/files/WatchPhotos-6-Oct--23.jpg?v=1762526089&width=1536)
![Citizen Crystal 7 33 Jewels-[37mm] Automatic (Ref. 4-520751 Y)](http://www.therevolverclub.com/cdn/shop/files/WatchPhotos-6-Oct--26.jpg?v=1762526089&width=1536)
![Citizen Crystal 7 33 Jewels-[37mm] Automatic (Ref. 4-520751 Y)](http://www.therevolverclub.com/cdn/shop/files/WatchPhotos-6-Oct--25.jpg?v=1762526089&width=1536)
![Citizen Crystal 7 33 Jewels-[37mm] Automatic (Ref. 4-520751 Y)](http://www.therevolverclub.com/cdn/shop/files/WatchPhotos-6-Oct--24.jpg?v=1762525759&width=1536)
![Citizen Crystal 7 33 Jewels-[37mm] Automatic (Ref. 4-520751 Y)](http://www.therevolverclub.com/cdn/shop/files/WatchPhotos-6-Oct--22.jpg?v=1762525759&width=1536)
![Citizen Crystal 7 33 Jewels-[37mm] Automatic (Ref. 4-520751 Y)](http://www.therevolverclub.com/cdn/shop/files/WatchPhotos-6-Oct--27.jpg?v=1762525970&width=1536)
