I agree on the F-15, but voted VF, since I think the service is lenient on these, except when I send them in.
I thought this was a lovely circulated example of one of the three Philadelphia key dates which bring up the tail end of the series. Sort of the caboose of the Barber half train, as it were. The 1915 Barber half had a mintage of only 138,000 pieces, making it roughly three and a half times rarer than a 1909-S VDB cent, and since this is a terminal end year issue as opposed to the cent, which was a first year issue, I imagine a much smaller portion of the halves got saved. Not to mention the half being worth more in commerce at the time, and thus more costly to set aside for a collector at the time than the 1909-S VDB cent would have been. And yet it is underappreciated and only worth a fraction of what the cent is today. So I think it is a wholesome example of a key date coin, and more importantly, found at a price I could afford.