Welcome, you are looking at a great piece.
This is the Seymour Duncan SH-4 JB Model Humbucker Pickup. Wiring: 4-conductor shielded. Magnet: Alnico 5. DC Resistance: 16.6k Ohm.
The Seymour Duncan JB Model has been Duncan's most popular pickup since its introduction in the 1970's.
With its hot coils, and Alnico 5 bar magnet, it delivers the trademark upper midrange attack, articulate low end, and harmonically rich highs to add juice and versatility to your guitar.
Its sonic diversity and character makes it ideal for any style of music from blues and jazz to hard rock and metal.
The JB Model Humbucker has a 4-conductor lead to allow for multiple wiring options, and is vacuum wax potted for squeal free operation.
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