This is an aftermarket product imported from overseas. This is a reproduction of the "CUSTOM MADE" plate used on 1960s Bigsby-equipped models. This is a printed version, not the one engraved with jagged letters that is also listed separately. On Gibson Bigsby-equipped models from the ES-335 and later, from the 1960s onward, stop tailpiece studs and anchors were hammered into the body using the same production process as the stop tailpiece specification. The "CUSTOM MADE" plate was used to conceal those anchors. In recent years, Gibson Custom Shop has released ES-335 reissues with Bigsby using the "CUSTOM MADE" plate as a reproduction part. It has many fans due to its appearance, and it can be said to be one of the most important parts that is always associated with 1960s Gibson Bigsby-equipped models. As shown in the image, double-sided tape is attached to the back, so it is designed to be fixed with that. You can also use it by hammering nails in, just like the vintage ones, so please try to be creative. I have posted several images of the real thing, so I hope they will be helpful.