Castrol Motor Oil promotional badge circa 1950s by Butler

A good original circa 1950's 'Castrol Oil promotional badge'; chomium plated example inlaid with green enamel and inset with 'Patent', inscription enhanced with red translucent enamel; the reverse impressed with manufacturer's details 'Butler Birmingham'. Very good condition, no stress marks or damage to the enamel.
Width 34mm.
Height 14mm.

Code: 59096