This one year type was struck at the Vienna Mint for Serbia. It has the same specifications as the French 10 Franc: 90% pure, and containing .0933 of an oz of Gold.
The obverse carries a bust of King Milan I. Denomination and date are enwreathed on the reverse and topped by a crown.
Only 300,000 were struck, and this coin is rarely offered for sale!
Average circulated condition. KM#17.1.