The form caliber Unitar 540 is an extraordinary movement in terms of features and workmanship.
Despite the small size, it contains an direct driven center second hand and a beautiful and technical useful, since it is temperature resistant, gold-toned Glucycur screw balance, which is shock protected by an Incabloc System on the top and by an unknown system on the dial plate.
|Number of jewels:||17|
Glucydur screw balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Long regulator arm|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||4 hole(s)|
|Functions:||hour, minute, second|
|Size:||6 3/4 x 8'''|
Flume: 1957 57|