Stainless steel neck plate purchased from Astronauts Guitars. Unused. The following is a quote from the Retro Tone Pickups official website: "This neck plate, though a simple part, has a significant impact on a guitar's sound. We spent about a year testing various patterns to perfect it. Most commercially available neck plates use thicker materials than vintage ones, but the thicker the material, the sharper the fundamental tone in the high frequencies. Also, surprisingly, even when we used 1.5mm thick steel with chrome plating, just like the vintage ones, the fundamental tone was sharper compared to the vintage ones, and we couldn't achieve the desired sound. Therefore, we switched the material to stainless steel and remade it. This neck plate has almost the same characteristics as the vintage ones in terms of thickness, weight, and fundamental tone. We believe that chrome plating this plate would further bring the overtones closer to the vintage ones. However, we found the sound appealing as it was, and we decided that chrome plating stainless steel would be too costly. So, we finished the product with a polished finish by a polishing craftsman. Among the more than 10 neck plates we tested, the vintage ones and this neck plate had the lowest fundamental tone, were rich in dynamics, and the sound when installed on a guitar was the most natural."