Yep, it's a midsbucker all right, even placed right up against the neck.
All Gibson finishes are thin, even when they don't look to be. You can't blame Gibson for that kind of damage.
This gets me to thinking, maybe I'll rip out the stock pickups on my SG Standard and install three Telebass buckers. Fart-in-the-bathtub tone times three. Oh, and I'll add a preamp.