Coat of arms of Allieri

The blazon

D'or à l'aigle de sa., cour, du champ. Cq. cour. T.: l'aigle, iss. .: deux aigles de a., cour, d'or, le vol ouv.

Source: J.-B. Rietstap, Armorial Général (1884)

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.