Slava Caliber 2427

Manufacturer	Slava
Caliber Number	2427
Movement Type	Automatic, self-winding mechanical
Lignes	10.75”’
Diameter	24mm
Height	6.8mm
Jewel Count	Various (26/27)
Beat Rate	18,800 vph
Lift Angle	49 degrees
Power Reserve	~40 hours
Barrel/Mainspring Count	2
Hand-Windable?	Yes
Anti-Shock Equipped?	Yes
Regulator?	Yes
Hand Count	3
Functions	Central hours; central minutes; central seconds; day/date at 3:00
Other Features	Quickset date correction via pusher at 2:00
Hacking Seconds?	No
Country of Manufacture	Russia, USSR
Known Models	Sekonda, Vostok, etc (Add your watch to the comments below…)

The Slava caliber 2427 is a vintage automatic watch movement that was made in Russia (USSR era).

Slava 2427 VS 2428:

There is a similar caliber 2428 with the main difference being that the 2427 is an automatic movement, while the 2428 is a manual-wind. Both have a day-date calendar complication.

Modern watches with this caliber:

Although the 2427 is a vintage calibre, it is also found in some modern Poljot-International brand watches such as the “Tsars of Russia” series; Poljot New Jaroslavl; Poljot Gorbatchov; Poljot Moscow Nights.

Modern 2427 movements are no longer made in Russia.

Is it any good?

The Slava 2427 tends to be controversial in the watch community, with some being fans of the movement, and others pointing out its deficiencies. So much so, that even the main Wikipedia article for Slava was edited to remove content that is critical of the 2427 and similar calibers:

“Slava’s own mechanical movements feature two mainspring barrels coupled together with an idler gear. There are many versions of the movement including manual wind 2414 and 2428 (double date) and self-winding 2416 and 2427 (double date). The movements are quite sensitive to shocks due to thin balance staff. Other frequent problems include premature wear of rotor bearing and the clutch driving the hands (not a typical cannon pinion). Also the date indicator malfunctions are common. The movements are thus considered unreliable, especially compared to other Russian calibres.” –Source (“Slava Watches” on Wikipedia, edited on September 7, 2012)

Video – Slave Anti-Shock Spring Install:

Additional Resources:

• More Russian watch movements