18 1/2”’ | Hand Wind | Cylinder | Small Seconds |

Remarks:

• The name EOS was used by the manufacturer for both the movement and the corresponding watch
• Pillar construction
• Ratchet wheel and click between the plates

• Listing ID: 14467
• Manufacturer / Brand: Haller
• Caliber: EOS
• Size in French Lignes: 18 1/2''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown with pin/pusher
• Seconds Hand: Small seconds
• Escapement: Cylinder
• Date, Day, Month...: None
• Jewels: 1
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Approx. 38 hours
• Production Period: Unknown, probably around 1922+
• Country: Germany
• Identification: Movement marked with Haller, corresponding watch with ESO. Mentioned in the magazine 'Deutsche Uhrmacher-Zeitung' 15/1922.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)