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 and rubber, by Weiss of

1871-1900

Test tube holder, steel, second half 19th century

1851-1900

Test tube holder, steel, second half 19th century

1851-1900

Test tube holder

1901-1930

Test tube holder

1801-1950

Test tube holder, steel, plated, 1880-1920

1880-1920