Zenith 18.5''' 18-28, Winding stem, DCN: 1374

• DCN no: 1374
• Thread: 150
• Fits cal: cal: 18.5''' 18-28-3A, 18-28-3P, 18-28-4T

• A: = 88
• B: = 119
• C: = 180
• D: = 150
• F: = 710

Versions with positive setting mechanism..

• 18-28-3A: Breguet hair spring.
• 18-28-3A-6: Pare-chocs.
• 18-28-3P: Breguet hair spring.
• 18-28-3P-6: Pare-chocs.
• 18-28-3P-7: Breguet hair spring, swan neck regulator.

Versions with negative setting mechanism, nouveau

• 18-28-1T: Lépine.
• 18-28-3T: Lépine.
• 18-28-2T: Savonette.
• 18-28-4T: Savonette.
• 19-28-1T: Lépine grandeur 19'''
• 18-28-2T: Savonette grandeur 19'''

Versions with negative setting mechanism, ancien

• 18.5''' NVS Bas VS: Lépine and savonette, no engraved cal. no.