These vintage hat display stands are so charming! They would have been used in a millinery shop or department store. This listing is for a matched pair - they most likely date to the 1930s. They are made of wood that looks like fine grain pine from underneath the base. Except for the underbase, they are fully painted in a dark shade of turquoise. 

Size:

Standing on flat surface - 9.25" tall (23.5 cm)
Diameter of base - 3.85" (9.75 cm)
Diameter of knob - 2.25" (3.75 cm)

Condition: Sturdy. The "knob" of one stand is loose enough that it can be removed by a little twisting. There is minor paint chipping and small discolorations here and there as might be expected in something of this age.