SOLD $50 PayPal shipped ConUSA lower 48. Seymour Duncan SMB-5a pickup in good shape. Here's the official details: 4/5 string for Music Man® (alnico) SMB-4a & -5a - Seymour Duncan 4-String Description The Alnico magnets, together with unique coil windings, have the effect of extending both ends of the frequency spectrum beyond that of the ceramic magnet version. In other words, the Alnico version is both warmer on the bottom and more detailed on top. Comes with four-conductor hookup cable and logo cover.