Brand: Colleen P.Co., LTD.
Made in: Japan
This one has alternate color on the print side of the hex....subtle as it may be.
Founded in 1916, Colleen liquidated its assets in 1997. At one time it was considered one of the big three Japanese pencil manufacturers. Interesting to note that in 1982 Colleen flipped its triangular-shaped logo from right to left, and also changed its logotype to a round gothic font.