Coat of arms of Anson

The blazon

ar. three bends engr. gu. in the sinister chief, a crescent of the last. — Crest, out of a ducal coronet or, a spear-staff purp. head ppr. [Confirmed to George Adams, of Shugborough, who, by royal sign manual, took the name and arms of AnsonJ]

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.