Small circle of deep red glass mounted in ivory frame to view solar eclipse
1850-1860
1850-1860
1999
1750-1799
1870
1999
1927
1900
1869
1900-1905
1860
1850-1860
1919
1868
1867
1999
1919
1724
1900-1910
1999
1999
1998-1999
1998-1999
1998-1999
1998-1999
1706
1998-1999
1860