im not much help, but ive never seen a half penny like that, the 2 that i have look like pocket pieces in g4 condition
I only found one on ebay here it is http://cgi.ebay.com/OLD-ENGLISH-COI...021?pt=LH_DefaultDomain_0&hash=item27b8f478e5
Very interesting, great coin I must say im quite jelouse. It isn't a fake coin I have seen a few of these before. It's a Queen Victoria, Bronze Half Penny. Judging by your coins grade it's worth round about, £5. Hope this helps.
The way I see it, A coins value is how you feel toward the coin, the story behind it the legacy, not how much someone will pay for it.