sentences:  They also produced the SCUBA/Demo knife, which is a replica of one of the rarest military knives to date (only 1 of the original 39 knives produced has survived till this day).Author Greg Walker considers knives such as these and many of the SOG models produced prior to the shift of production from Seki City, Japan to Taiwan to be the best knives SOG had ever made.A second "maritime" version of the Bowie (S2) was made utilizing a black micarta handle and stainless steel blade known as the Trident.