Original 1873 Austrian commemorative souvenir medal celebrating the Vienna World's Fair (Weltausstellung Wien). Features Emperor Franz Joseph I in military uniform on the obverse and an exhibition building with a prominent central dome on the reverse. The initials A.S. below the portrait are associated with Austrian medalist Anton Scharff.

- Date: 1873
- Obverse: Franz Joseph I facing right with imperial titles
- Reverse: Exhibition building, WELTAUSSTELLUNG WIEN 1873
- Artist's initials: A.S.
- Composition: Silver-colored white metal; exact alloy undetermined
- Diameter: 26.5 mm
- Weight: 6.09 g
- Edge: Plain
- Alignment: Medal alignment
- Integral suspension loop