Original blazon: Quarterly per fesse indented first and fourth, gu. in chief a maunch ar. in base an acorn sprig or, second and third or, three dragons' heads couped of the first.
Crest: Out of a palisado coronet or, an arm embowed habited gu. cuff ar. holding in the hand ppr. an oak-branch leaved vert fructed gold.
(granted 20 May, 1761, to Isaac Akerman, of London and Surrey).
Source: Burke's General Armory (1884)