Emperor KAO TSUNG
AD 1736-1795
reign title: CH'IEN-LUNG, AD 1736-1795
The front (top picture) rotate clock wise 90*
Ch'ien - Top
Lung* - Bottom
Tung - Right
Pao - Left
The back (Bottom picture) rotate anti clock wise 90*
Right: Manchu Ciowan
Left: Manchu Boo - coin
"BOO CIOWAN" (Board of Revenue mint in Bejing). The Manchu mint name translates to Pao-Ch'uan, or "The Fountain head of the Currency".
Hope this helps
Great find