Amazing Victorian 15 carat gold charm 'black and red' the precursor to roulette.
This charm has a sprung mechanism. Pull the lever and send the base spinning along with the pearl like ball, which will come to rest on the red or the black.
 
Fine glass slightly domed top 
 
Eight red and black enamelled outer domes, plus bale and jump ring. Marked for 15 carat gold
 
20mm diameter x 7mm deep
 
9.4g
 
In excellent condition and working order.
 
When using do not push down on the glass top!