This is a Gibson original mini-humbucker. I bought it last year at a local musical instrument store, where it was being sold as dead stock, for 23,000 yen, as indicated by the price sticker. I bought it for a custom build, but I no longer need it, so I'm selling it. I have never wired or soldered it since I bought it. I bought it for the treble (rear) position, but I can't tell the difference between it and a rhythm (front) pickup. I can't tell from the serial number either. If you know more about this, please let me know. Since this is an unused, old pickup, I haven't confirmed its operation, and I can't guarantee its functionality. Please consider purchasing only if you understand this. ORIGINAL MINI HUMBUCKER