Really cool Victorian 9 carat yellow gold lucky dice fob and matching watch key.
The die is hinged into a gold ring which in turn is pinned into the arm of the fob so that the die can swivel on one axis, and the circle on the other. (See video)
The top of the swivel is decorated with a gold buckle on both sides, matching the accompanying watch key. 
In Victorian times buckles symbolised loyalty, fidelity, and strength. They also represented the binding together of two people in love or in friendship.
This made jewelry with buckle motifs popular tokens of esteem.
Weighs - 
Fob - 4.46g
Key - 1.66g
Spinner is 44mm long incl ring
Key is 33mm long incl ring 
Marked 9 carat 
English circa 1890
Excellent condition