Auxillary counter weight from free pendulum clock
1899
1899
1899
1899
1899
1937
1937
1701-1800
1899
1899
1899
1937
1937
1937
1875-1900
1899
1795
1671
1675-1685
1899
circa 1780
1937
1937
1701-1800
1937
1701-1800
1937
1899
circa 1700
1937
1656
1701-1800