Lucky bean charms were very popular throughout the Victorian and Edwardian period. They were inspired by the "sea beans", large legume seeds from the tropics that washed up on beaches far from home, but the name could be applied to any durable floating seed found on the beach.
Because seeds can still germinate many years later they were considered potent talismans.
This one looks like a sea heart bean. 
Around this period many wooden charms were made for luck such as the popular ‘Touch Wood’ and ‘Fums Up’ charms which also had faces.
This boi has the face of a deep sea fish, with prominent brow, gold down turned mouth, and eyes set with emerald green faceted pastes. 
weighs - 7.9g
9 carat gold with green paste eyes
measures - 30mm x 24mm x 17.5mm 
English circa 1900
Condition - good antique condition. Small fine crack on gold mount