ST 1800-210, Third wheel

ST original part from a NOS movement.

• Fits ST cal: 1800, 1801, 1940, 1950, 1951
• Fits AS cal: 1940, 1950

Technical data: AS/ST 1800

• Manual wind, center second.
• Size: 10.5'''  23.3 mm.
• H: = 4.50 mm.
• N: = 18.000 A/h.
• Power reserve: 46 h.

Versions:

• 1800:    10.5'''
  
• 1801:    10.5''' date.
• 1802:    11.5'''
• 1803:    11.5''' date.
• 1940:    10.5''' 21.600 A/h.
• 1941:    10.5''' 21.600 A/h, date.
• 1950:    11.5''' 21.600 A/h.
• 1951:    11.5''' 21.600 A/h, date.