I'm assuming there not worth the 20¢ I bought it for. Also your from England so isn't your dollar worth more than my dollar.
We don't have dollars, we have pounds, but I always convert to the local currency for a mainly US board. 20c. is fair enough for one, in bulk they are worth maybe 10C tops and sell to people with old one armed bandit arcade machines or people who want them for advertising or decorative pieces like table tops. One US jeweller bought about 20,000 from me for wedding packs, "Something old, something new...............and a sixpence to put in your shoe."
It actually has 4 different plants on the reverse. Tudor rose at the top for England. Thistle on the right for Scotland. Leek on the left for Wales. Clover on the bottom for Northern Ireland.