
Watch movement with spring detent escapement by John Arnold and Son
1787
1787
1680
1692
1601-1700
1800
1901-2000
circa 1820
1953
1800-1825
1825
1701-1800
1796-1799
1820
1800
1801-1900
1830
1823
1808
1820
1781-1800
1701-1800
1701-1800
circa 1760
1775-1785
1825-1835