Bottle of Dentin tooth powder, made by Dr. Speier and von Karger of Berlin, 1901-1940 Bottle of Dentin toothpowder, 1901-1940. 1901-1940
Tin of John Bell's toothpowder, by John Bell, Hills and Lucas Ltd. London, 1930-1960 Tin of John Bell's toothpowder, c 1930-1960. 1930-1960
