1999-P Delaware Quarter

Hi everyone.. I think I'm really getting into this coin collecting because I find myself looking through every bit of change I get now, I've come across this Delaware Quarter and comparing it to another one from the same mint, the rein from the riders hand to the horse's mane is missing and so is the top of the saddle, it is not worn at all, the rest of the detailing can be seen quite clearly there is not even a faint trace of a line. Is there or is this a error coin I've tried to put a pic. on but it's either fuzzy or to big so I cant upload it,... any help on this question would be gratefully received.........roy