Imitation tortoiseshell celluloid gents' hair brush, c.1930s

A c.1930s gents' rectangular hair brush, approximately 18cm long, the back covered in shiny sheet celluloid in imitation of tortoiseshell, with numerous small yellow spots forming part of the pattern within the plastic.  There are a few scratches and scuffs to the celluloid surface, together with slight to moderate wear to the bristles, although the brush is in good condition overall.