Actually Rick the 31st was stationed in the Philippines in 1918 and the initials are from the sellers great uncle who was stationed in the Philippines in 1918. I've been in contact with the curator at Fort Drum and he said he would love to have it for the war museum. Of course someone must have polished the blade at one point
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http://www.drum.army.mil/AboutFortDr...useum_lv2.aspx
Btw it's knife