1942 British 6 Pence!

I got this at the flea market for silver value along with a few other coins that have been shown already and a few that have yet to be shown. It is a little dirty and worn but not enough to bring it to only be worth silver value which leads me to wonder why I got it for so little. Well, it's only worth $2.50 and has a silver value of $1.54 so not that cheap but still. Here's a link if you want to read more about it.