The Perfect Carry | The true-to-the-original Boker Trench Knive also has a stainless steel blade made of C75. This carbon steel with an enormous edge retention requires appropriate care today as it did then. The massive stainless steel crossguard, the old official tang stamp on the blade, the ribbed wood handle and the authentic sheath made of high-quality leather are also part of the original equipment. The knives are marked with a serial number.