A nice legible piece of an early Reichsmark 10-mark.
Obverse: the ruler's head to the right, below it the mint mark A, in the rim the legend:
WILHELM DEUTSCHER KAISER KONIG V. PREUSSEN;
Reverse: eagle of the Reich, in the rim legend:
DEUTSCHES REICH 1875 10 MARK;
Gold .900, catalog weight 3.982 g.