1537 AD., German States, Saxony, Albertine and Ernestine line, Johann Friedrich and Georg, Annaberg mint, 3 Pfennig, Saurmasche coll. 4439.

German States, Saxony, Albertine and Ernestine line joint issue, Johann Friedrich and Georg (1534-1539), Annaberg mint, moneyer Wolf Hünerkopf (cross over star mintmark), 1537 AD.,
3 Pfennig ("Dreier") (ø 18 mm / 0,96 g), silver, axes medal alignment ↑↑ (ca. 0°),
Obv.: helmeted arms, mint mark `cross over star´ to left.
Rev.: 15 - 37 , date flanking helmeted arms.
Keilitz 140 ; Keilitz/Kohl 87 ; Merseburger 471 ; Schulten 3072 ; Saurmasche coll. 4439 . http://www.medievalcoinage.com/saurma/someoldcoins.org/saur/1/2377.htm

The coat of arms with the crossed swords is the so called "Kurwappen" and is part of the Margraviate of Meissen. The swords refer to the "Erzmarschall" position there (Archimarescallus of the Holy Roman Empire). The helmet also belongs to the landgraviate of Thuringia (Ernestine Elector Johann Friedrich).
The diamond crest plus the helmet above belong to the Duchy of Saxony (Albertine Duke Georg).
It´s a joint issue of the Albertine and Ernestine lines - as usual til 1547.