Coat of arms of Bayly

The blazon

gu. a fesse vair betw. two mullets of six points in chief, and a heart in base ar. — Crest, an arm couped at the elbow, and erect, habited gu. charged with a fesse vair, the cuff ar. holding in the hand ppr. a mullet of six points or.

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.