The two varieties are pretty common. If my reading of the Dutch(?) text is correct the basic story has been told already. These tokens were produced as a method of payment as well as a way to commemorate the current victories and were used in Spain by British troops and were later shipped to Canada where they were used as halfpennies. It was important to the war effort that British troops behave themselves in Spain and not loot. They were chronically behind on their pay, local Spanish currency was not to be had and the British public was already dealing with a shortage in small coins by a second, less famous round of privately minted half-pennies, pennies and shillings.
They're treated as medals in British Historical Medals (p. 180, #742) probably because rare examples were struck in silver and they meet the other criteria BHM had for inclusion. There are other variants (not the common &c. &c. &c.) that are much more difficult to collect including the 1813 version mentioned before.