Just one lion on the shield? That's a "Scottish" shilling.
Interesting, but sadly, it's extremely common, and not made of silver (unlike Aussie shillings of the same date). CV is 15¢ to 35¢ circulated; no point trying to sell it, in my opinion. In Britain, it's probably still worth 10 decimal pence, but in Oz or NZ your best "value" would be obtained by spending it in a vending machine for 10¢.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis