1960 South African Penny But Not Copper?

Some South Africa Pennies of this vintage were made of brass, not bronze, but
of copper nickel, I know nothing.
The yellow brass Pennies had a Voortrekker wagon reverse, - not pictured in my edition of Krause World Coins


If coin pictured is of pure nickel (I doubt it), or copper nickel, it would be an off-metal strike, If this is the case, it may be a Mint sport, and this coin could turn out to be quite valuable.

For comparison,
the South Africa .500 silver Half Crown weighs 14.13 grams, the .500 silver Florin 11.31 grams.

Copper nickel Pennies with central hole were produced for British West Africa. There is a vague possibility that an unholed blank may have been used to produce the coin pictured. Weight would help in this investigation.

There always remains the possibility that it is nickel plated.
Not hard to do in a high school lab experiment.

NumisRob: You are right.
My collection of lower valued coins is rather extensive, but not that well organized, and I failed to find the brass Voortrekker One Cent (not penny).

AU details, cleaned or polished.