One piece of flat spring steel
1790-1819
1790-1819
1790-1819
1790-1819
1790-1819
1790-1819
1790-1819
1888
1928
1912
1918
1930-1939
1912
1918
1880-1935
1975
1975
1790-1819
1790-1819
1790-1819
1790-1819
1790-1819
1975
1790-1819
1790-1819
1790-1819
1790-1819
1790-1819
1975
1975
1960s
1790-1819
1968
2020
1988
1933