Alarm whistle for use by psychiatric warders
1890-1914
1890-1914
1822-1869
1870-1910
1870-1910
1855-1880
1866-1900
1850-1900
1826-1842
1850-1900
1880-1930
1830-1890
1860-1900
1870-1910
1880-1920
1860-1890
1830-1890
1870-1910
1945-1955
1850-1900