1815 ANNUAL CALENDAR
Introduced in 2017, 1815 ANNUAL CALENDAR uses an annual calendar that requires correction only once a year.
History timeline
2017
Introduced
Source: A. Lange & Söhne official 1815 family / press archive
Introduced in 2017, 1815 ANNUAL CALENDAR uses an annual calendar that requires correction only once a year.
2017
Introduced
Source: A. Lange & Söhne official 1815 family / press archive