Coat of arms of Schrieber

The blazon

erm. three griffins heads, erased, vert. — Crest, a dexter arm, embowed, in armour, ppr. garnished or, holding in the hand a dagger, the point towards the dexter, also ppr. pommel and hilt gold.

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.