This Reverse Tipt teaspoon measures 5 1/2" long and weighs .74 T. oz.
It is clearly stamped with pseudo hallmarks that include a "lion passant," a "leopard face," "YS," and a "bust."
Intentionally mirroring late Georgian English style and period hallmarks, this is an example of Chinese Export silver, produced in this instance in Canton by the maker Yatshing aka Yat Shing.
As export silver, it would likely have been made to a sterling standard and is well crafted...