Pen shows Heartland Lysine Inc  500 bw TOMBOW JAPAN.  Case shows TOMBOW K 1 Z  on the back opening edge.  Appears to have been used as the backside of the pen opposite of the clip has a scratch as seen in my picture.  Ink cartridge currently in the pen does not work, skips alot in black ink.  Came with replacement cartridge that shows 0.3 and is unopened, so no way to test to see if it works.  Metal case in very good working condition, closes tightly and has a couple very very light scratch marks under bright lights.  Buyer pays actual shipping.