The Seymour Duncan Vintage Staggered SSL-1 single coil pickups have staggered pole pieces like the pickups on all stratocasters until late 1974 when the poles became flat parallel with the pickup covers. These pickups are designed to be an exact replica of the original Alnico V Stratocaster guitar pickups. The magnet wire used and the number of coil windings are the same. The magnets themselves go through a "Dun-aged"process to get a bit more of an authentic tone.