What is value 1854 half dime w arrows o?

Depending on the condition it is worth 25 to 25000 dollars. The O stands for New Orleans mint the arrows is something they did 1853 through 1855. The 1854 O with arrows was not an uncommon coin but has become one. One thing to understand is through out the years there are certain points when coins where melted because of a high silver price. A lot of people held on to the rare mintages and disposed of the more common dates. According to the PCGS population estimate only 300 survive today the rarity rating in any condition is 6.4 which makes this a rare coin. The scale is 1 to 10 1 being over a million around 10 being the only known example. I just happen to have a dime like this that is in F to VF condition that's worth about 30 to 40 dollars. My advise is hold on to it if you can and don't sell it for scrap silver you would only get 1 dollar out of it; There are plenty of 1964 dimes for that.

PS I originally answered this thinking it was a dime but I see it is a half dime the value is greater than the dime.