Gold coin from South Africa criminal pockets (6)

'gold coin' is the definition.
'bezant' can be an answer for 'coin' (bezant is a kind of coin). I'm unsure of the 'gold' bit.

'south africa criminal pockets' is the wordplay.
'south africa' becomes 'za' (abbreviation for Zuid-Afrika).
'criminal' becomes 'bent' (bent can mean corrupt or criminal).
'pockets' means one lot of letters goes inside another.
'za' going into 'bent' is 'BEZANT'.

'from' acts as a link.

Can you help me to learn more?