Maybe in Australia, but Spain (and Europe and north africa - I'm not sure about Asia which may have had small lingots / balls of metal) had coins since a while ;)
Actually it's not totally right, as Spain was not united by then, and was divided in many small provinces with a few big ones (Castille, Leon, Aragon).
Here is for example a half crown (it has nothing to do with the UK crown - weight wise - it's just its name) for Sanche IV of Castille (1284-1295) :

