Wouldn't a factory Pelham Blue have aged to a greenish shade by now, especially on one that obviously hasn't been a case queen? More likely it's an older non-Gibson refin.
Friend of mine got $1500 (IIRC) for his yellow and black refin Bicentennial a year or two ago, someone before him had put two J pickups in, but he still had the original pickups and reinstalled them before selling. And his had the original bridge. This one's already at $1224 without those. Too high.