Prices come from the reviews in their original currency and market. Article dates are shown below.
Specification
PS HorologyTsuba 1720
BreguetClassique Souscription Platinum
Reference
Not stated
2026PT/28/9W6
Winding
Automatic winding
Manual winding
Calibre
Vaucher 5401
VS00
Diameter
38.3 mm across
40 mm
Size / thickness
38.3 × 8.91 mm
40 × 10.8 mm
Power reserve
48 hours
96 hours
Case material
316L; 38.3 × 8.91 mm
Platinum; 40 × 10.8 mm
Functions
Not stated in the review
Not stated in the review
Crystal
Not stated in the review
Not stated in the review
Water resistance
3 atmospheres
3 bar
Price and market
Not stated in the review
Not stated in the review
PS Horology · Tsuba 1720
Strengths
The most convincing element concerns telling time: reversing the scales led to a purposeful redesign of both hands. Graham’s history gave the project a concrete problem to solve, rather than merely a reason for a commemorative inscription.
Things to consider
Water resistance of 3 atmospheres and a 48-hour reserve limit versatility. Reading the inner minutes and the revised bracelet’s fit need personal assessment.
Platinum frames the white enamel and blue hand particularly well. But the real reason to choose a Souscription is the pleasure of one hand, a visible movement and manual winding every few days.
Things to consider
Five-minute markings mean estimating intermediate minutes, and there is no seconds hand. Before buying, make sure this way of reading time genuinely suits you.
