Vintage Hinged Dental Display Model by Pro-Phy-Lac-Tic cultural a spring loaded hammer strikes

a spring loaded hammer strikes quart in order to create a spark

The company was sold to the Standard Steel Tube Company in 1907 for $25

Its hand-painted detailing and utilitarian form capture the visual charm and early advertising sensibility of turn-of-the-century mercantile fixtures

Paint and surface show heavy age wear

Vintage Hinged Dental Display Model by Pro-Phy-Lac-Tic cultural a spring loaded hammer strikesc. 1920s 1930s; Pro Phy Lac Tic Brush Company Florence, MA Compact hinged dental demonstration model molded in early celluloid or composition plastic, featuring a full upper and lower set of anatomically rendered teeth mounted within a faceted metal edged case. The model opens and closes smoothly, revealing detailed tooth forms and gum contours intended for in office demonstration or patient education. The exterior retains its original metal top plate