This Al Mar Knife "S.E.R.T. Automatic Knife Black Plain Edge 1st Prodution is Rare Old and Discontinued Al Mar Knife "S.E.R.T. Auto". Black anodized 6061-T6 aircraft aluminum handle scales that are machined for grip. High polished black boron coated ATS-34 high carbon stainless steel blade that is swedged toward the tip and etched "1ST PRODUCTION RUN ATS-34 AL MAR SERT USA". This knife opens with the push of the button and locks up solid, also has a sliding safety thumb lock below the button. Removable pocket clip. Lanyard hole. This awesome knife is an Al Mar 1st production run knife still in the box coulpe minor scratches on blade.