The MST caliber 366, which was used in Roamer watches is a ladies' form movement of decent quality. It uses seventeen jewels, a screw balance (not shock protected) and a regulator with a long arm.
The angeled plates, the stripe decoration and the indicated chatons add a very nice appearance, and this is something, which is not too common on those tiny ladies' form movements.
MST 366 dial side
|Number of jewels||17|
|Escapement||Anchor with pallets|
|Balance||Nickel screw balance|
|Balance cock direction||counterclockwise|
|Regulator type||Long regulator arm|
Escapement wheel, Fourth wheel, Third wheel, Center wheel
|Setting lever spring||3 holes|
|Beats per hour||18000|
|Size||53/4 x 63/4'''|
|Image in Flume Werksucher ||1949 II 85|
MST 366MSTMST3665 3/4 ''' 6 3/4''''''17 Jewels, 5 3/4 x 6 3/4'''''', 18000 A/h
Roamer ladies' watch (dial only)