She's got a little lack luster. But strong detail on both obverse and reverse. I'm asking only for GBP not USD.
Well, based on what I can see, I wouldn't call that AU... more like XF. You'll need to post a picture of the obverse in order to get a better grade and value estimate.
I would grade it as Fine using British standards. Its not a Half Cent its a Quarter Penny 2 Farthings = Halfpenny 2 Halfpenny = One Penny
It is not AU by any standards, there is wear to the wheel and Britannia`s robes. Catalog value is about £1, I can get them by the bucket load, I wouldn`t pay anymore than 5 cents for it.
If that is AU then i guess all of my VF sets must actually be mint state on the British grading scale!
If the OP's coin is AU, what's that make mine? It shows a little wear here and there, more on the reverse than the obverse, and I would say more luster than usual for a circulated coin... Incidentally, the front of the big Krause books has a page called "Standard International Grading Terminology and Abbreviations." There is no separate listing for Great Britain. It appears as "U.S. and English Speaking Lands," but the table includes Brazil, Denmark, Finland, France, Germany, Italy, etc., through Sweden. So now the idea of British terminology comes into some question.
I may have been a bit generous calling it VF basing the blurring as much on a poor picture as on wear. It's calling UK coins 'cents' that gets my goat. Like davey says, not all that valuable, I probably have one similar in the odd farthings tin in my shed. Although we British use the same grading terms, I think we tend to be rather stricter with the use of them. AU is a bit hopeful, EF is more realistic for a coin that shows signs of any wear, but you'll still se it used. .And of course, all UK dealers and most collectors are well experienced at grading since we see no need to have any third part do it for us. That's not to say many dealers, although experienced, are not also optimistic with their verdicts.
Sorry pal, but that's not AU or even XF... I'd pay up to $5 for something like that since those are a little harder for me to get than @daveydempsey
1879 Small 9 type, common date. It look only Very Fine with dirt between letters? Value £1.00 or £2.00 at best