This is the Comandante Lab Series Hammerhead. It's still rare in Japan, making it quite a valuable item. I purchased it through overseas shopping. I bought it along with another item from the Lab Series, but I've decided to use the other one, so I'm offering the Hammerhead for sale. It seems the blade is designed to easily grind large beans like Pacamara, bringing out a clear flavor. I noticed a clear difference compared to my well-used normal C40, so I believe the Hammerhead is also specifically designed for Pacamara. It's unopened, so you can use it with peace of mind. If you'd like, I can include a genuine glass bean jar (clear or brown) for an additional 2000 yen (without the original box). Both jars would be an additional 3800 yen. I will adjust the price if you contact me through the question function. The item is in hand, so there are no customs fees or overseas shipping risks.