Welcome, you are looking at a great piece. This is the Seymour Duncan SH-1n 59 Model 4-conductor Guitar Neck Pickup. Wiring: 4-Conductor Magnet: Alnico 5. DC Resistance: 7.6k Ohm.
The Seymour Duncan 59 Model neck pickup is a full sounding, versatile PAF-style humbucker with an articulate attack, full bottom, and scooped midrange.
This humbucker has a moderate output and airy quality resulting in a pickups with tons of old-school tonal character, but with a brighter top end, scoopd mids, and a more compressed sound.
Other features include nickel silver bottom plate, no logo on the bobbin, 4-conductor lead wire for multiple wiring options, and vacuum wax potting for squeal free performance.
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