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unknown MST movementunknown MST movement


Even in tiny ladies' watches there can be very good movements. An example is Roamer, who put into a very small watch of only 17.5mm diameter this, unfortuately not further identificable, movement.

This MST caliber measures only 15.6 x 12.8mm (~ 7 x 5 3/4 lignes), but contains many high quality parts: a large glucydur balance, an Incabloc shock protection, an adjustable hairspring stud and a regulator with a hand. The main plate contains golden beared jewels and the anchor wheel even runs in a Diafix jewel setting.

I am glad for all hints which can help to exactly identify this movement.



 Technical data

Number of jewels17
EscapementAnchor with pallets
Shock protection(s)Incabloc
Balance cock directioncounterclockwise
Hairspring studmoveable
Regulator typeLong regulator arm
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Center wheel
Mainspring barrel
FunctionsHour, minute
Beats per hour18000
Size53/4 x 7'''
MST ?MSTMST?5 3/4 ''' 7 ''''''17 Jewels, 5 3/4 x 7 '''''', 18000 A/h



Usage gallery

Roamer ladies' watchRoamer ladies' watch