Philip I AR antoninianus FELICITAS TEMP This has better surfaces so is worth a lot more than the OP but the ID conveys. http://www.wildwinds.com/coins/sear5/s8928.html
Fairly common but it's always nice to have an antoninianus in your collection (e.g. double denarius). The radiate crown means "double." Keep in mind that these were typically about 1.5-1.6x the weight of a denarius, so the government got a little extra value out of the denomination. Just ten years later the government could no longer afford to issue these coins to meet fiscal obligations and switched to a bronze alloy coin with a silver wash. Not good.