Small cardboard box containing 9 glass and 12 silver balls of varying sizes
1901-1950
Boron steel balls for use in reactor safety systems
1960-1970
Materia medica consisting of ball of compacted resin and fibre
1871-1940
Guttman patent balls for filling reaction towers
Materia medica consisting of ball of compacted resin and fibre
1871-1940
19 gilded balls of varying size
1601-1900