This is a Seymour Duncan Yngwie Malmsteen Loaded Pickguard, autographed by the legendary guitar virtuoso himself. I got this straight from Seymour Duncan, so it is a legit autograph, but there is no certificate of authenticity. The autograph appears to be on the clear plastic protective sheet that all pickguards come from the factory with, so if you want to remove it you can. The box is also autographed so you actually have two autographed pieces here if you do remove it from the pickguard. Another option would be to remove the electronics from this pickguard, install them in another pickguard, and save the autographed one as a collectible. A wired 1/4" jack is included.

From the web:

Summary

This fully loaded pickguard was specd out by Yngwie himself to ensure that with this setup your Strat will deliver The Fury.

Description

The YJM Fury Loaded pickguard is ready to drop-in to your Stratocaster with an 11 screw-hole USA pattern. This prewired setup includes a calibrated set of the YJM Fury signature pickups, and the high-speed no-lube YJM volume potentiometer that meets Yngwies demands for speed and responsiveness. These handmade pickups are built and loaded into the pickguards in Santa Barbara, CA.The bridge model is designed to handle Yngwies chordal onslaught, and it delivers a precise, articulate response that has just the right amount of high end without sounding harsh or brittle. The bridge model is wound hotter to provide better balance with the neck & middle pickups.The neckmiddle model is designed to bring out the balance of Yngwies fluid left-hand technique with his broad mix of right-hand pick attack for a tone that is sweet and smooth. There is just the right amount of high end to make this pickup extremely articulate, and especially responsive to dynamics. Back in the 80s we patented a special bottom coil that actually injects negative hum into the pickup circuit and at the end of the production process, we fine tune each pickup for maximum noise cancelation. You get all of the great qualities a classic Strat pickup, and none of the hum with our Stack pickups.