I quote from the Oxford Guide:
In 1625 he [Garter Segar] confirmed arms granted in a letter of safe conduct to John Smith, descended from Smith of Cuerdley, Lancashire. The arms Vert a chevron Gules between three Turks heads couped proper turbanned Or
were granted in memory of three Turks heads which John Smith cut off before the town of Regal in Transylvania when serving under Henry Volda, Earl of Meldritch. Segar was apparently happy to confirm a red chevron on a green field, which by placing colour on a colour, transgressed the rule of armory in England, if not those of Transylvania.
Whoever sketched the picture above either did not understand hatching or thought that the arms were Or a chevron sable ...