This is a Suji-biki knife (slicer) by Shodai Seikichi. The blade length is approximately 28cm. It's a double-edged knife, but it's closer to a single-edged knife with an 8:2 ratio. The steel is unknown, but I believe it's chrome molybdenum steel. It has the SYODAI Tokusei forged stamp. This is a Suji-biki knife (slicer) by Shodai Seikichi. Although it's listed as double-edged, it seems like it was originally single-edged and the back was slightly sharpened. Therefore, I sharpened only the front side as much as possible. (I didn't touch the back. I considered returning it to a single-edged knife, but it cuts well enough, so I prioritized the current state.) Suji-biki knives have various uses, and this size is perfect for handling large items. I repaired and mirror-polished it because there were many sharpening scratches, so some fine scratches and pitting remain. I recommend it if you don't mind. Both the cutting edge and the flat surface are almost mirror-finished. It's also light for its size, and it's generally clean, so I think it can be used for a long time. I recommend it to professionals due to its size. It has been finished with a Kitayama 8000 grit stone, a Shapton 12000 grit stone, and a natural whetstone. It's in a very sharp condition, so you can use it immediately. ● Size: Blade length approx. 280mm ● Blade thickness: Approx. 2.2mm at the thickest point ● Overall length: 410mm ● Weight: 243g #Knife #Slicer #ShodaiSeikichi #28cm