AS 1900-721N, Balance, complete

• AS original part in factory sealed packaging.

• N: = 21.600 A/h

• Fits cal: 1900, 1901, 1902, 1903, 1904, 1906, 1911, 1913, 1914, 1916, 2060, 2061, 2062, 2063, 2064, 2066, 2072, 2073, 2074, 2076, 2084, 2086

Versions with: Manual wind / Automatic

21600 A/h.

• 1900 / 1902:   -
• 1901 / 1903:   date.
• 1904 / 1906:   day, date.

21600 A/h, quickset date.

• 1911 / 1913:   date.
• 1914 / 1916:   day, date.

21600 A/h, quickset day, date.

• 2060 / 2062:   -
• 2061 / 2063:   date.
• 2064 / 2066:   day, date.

21600 A/h, new automatic.

• -       / 2072:    -
• -       / 2076:    day, date.
• -       / 2073:    date.
• -       / 2082:    digital.
• -       / 2083:    digital, date.
• 2084 / 2086:    date, month calendar.

28800 A/h, hack feature.

• 2160 / 2162:    -
• 2161 / 2163:    date.
• 2164 / 2166:    day, date.
• 2174 / 2176:    day, date.
• 2184 / 2186:    date, month, calendar.