Letter opener with calendar and map, 1893-1894
1893-4
1893-4
2000-100 BCE
1934
1863-7
1955; 1830
1862
1862
1775-1799 (original); 1900-1907 (model)
1990-96
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
4000-2001 BCE
1862
1705-1737
1870-1877
1934
1930 (replica); 1834 (original)
1862
1830 (original); 1967 (model)
1862
1870-10
1883-01
1730; 1967
1872-08
1972-3
2500 BCE
1880-120
1870-1850
1871-1830
1915-1825
1990-95
1901-950
1862
1862
1862
1862
1800-1830
1801-1850
1800-1830
1798 (original); 1977 (model)
1066; 1876
1862
1859; 1986
1888-185
1945-50
1862
1862
1862
1862
3000-1500