Test tube holder[?], brass and cork, 1750 to 1850
1750-1850
Test tube holder
1901-1930
Test tube holder, steel, plated, 1880-1920
1880-1920
Test tube holder, steel
Test tube holder, steel, second half 19th century
1851-1900
Test tube holder
1901-1930
Test tube holder, steel, second half 19th century
1851-1900
Test tube holder
1801-1950
Test tube holder, steel, plated, 1880-1920
1880-1920
Test tube holder(?), steel and rubber, by Weiss of
1871-1900