Nieuw lid van mijn Roamer familie, de Roamer Searock MST 523 (17 jewels). Relatief jonge versie van de Searock (1975) met mooi kleurenpalet. Het horloge zelf is in zeer goede tot uitstekende esthetische staat en loopt stipt.
Vond de dial altijd al erg mooi maar had deze versie met d/day/date nog niet eerder gezien. Blij met deze nieuwkomer 
Onderaan nog even de specs.
Model: 523.2120.319.
Power reserve 53 h.
Stainless steel case.
Stainless steel band Roamer.
Dimension: 40 x33x11 mm.
MST 523
Features
- automatic
- sweep second
- day
- date: quickset
- hack feature
Data
11.5’’’, Dm= 25.6mm, Do= 26.0mm
17 jewels
f = 21600 A/h
power reserve 55h
Balance staff MST 7535
Mainspring
1.30 x 10.5 x 0.112 x 340mm
replacement:
Zf873, 1.30 x 10.0 x 0.11 x 320mm
Hands
1.50 x 0.90 x 0.25mm
Remarks
1975-1976 last MST designed family
Except the calendar discs all parts are usable for each family member.
hacking by stopping the 4th wheel, not as common the balance.
indirectly driven minute allows a big balance and low profile
option: excenter device mounted on regulator (Fig.5)
rotor with bayonet joint (1/4 turn of the “screw head” to release or lock the rotor)
attention: right handed crown-wheel screw
family/generations:
520: manual wind
521: manual, date
522: auto, date
523: auto, day, date
suffix -1: minor modifications
