I found these items under an old historical granite and stone building built in 1870. The resemble the jumbo crayola crayons, but I believe they are graphite. They measure 5/8" in diameter and vary in length up to 4". Inscribed on the side of them is "BIOGRAPH" , "GERMANY" , & "10617". I have been unable to find any info on them for about a year now. Any suggestions would be appreciated. I'm new to this forum, so bear with me if my post doesn't come out right. THANKS!!! AJC