Can anyone give me a good guess as to the age of this knife. It is a Andy Thornal Special.The spacers seem to be a gold color with brass mixed in. The blade is stamped A.T.-S. # 25. The stone is white but the marking are worn off. The blade is 0-1 tool steel. The stag fits in my left hand like is was made for it. The handle is a quite large piece of stag. Thanks for any info.