Martin Schrot
Martin Schrot (Augsburg, ? – after 1581) was a German goldsmith and engraver from Augsburg. His name has also been spelled "Schrott" and "Schroth". He is not to be confused with the Protestant poet from Augsburg with the same name.
Schrot was born in Augsburg and stayed in his native city for most of his life. He acted as a goldsmith, copperplate engraver, bookkeeper, and also as a townsman. In his book Wappenbuch, the tinctures were designated with the given names of the colours.
...
Wikipedia