Gertrude Antiques has dated this piece to the 19th Century.
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The mug would have been used for drinking beer. Frog mugs were first produced in Sunderland before being copied in Staffordshire and Worcestershire. The frog was included to cause amusement as it appeared as the drink was consumed. This type of practical joke mug was popular from 1775 though to the end of the 19th Century. The frog would sometimes gurgle at the drinker through a hole in its mouth, as was probably the case with this mug. There are frequent references to these mugs by sailors as they were used in the taverns they frequented.

The interior of the mug is painted with flowers in grey, including along the rim.
There is a glazed over chip (factory) to the base. The mug has worn well and is in good condition for its age with no chips and no restoration.
Gertrude Antiques has dated this piece to the 19th Century.
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