This auction is for an Alcro Marking Pen set that consists of the pen, ink bottle (either empty or nearly so), dropper and razor blade (I think).  Judging from the prices the set is probably from the 40's/50's.  There is a price on the back of the box for $1.50 and the nib replacements were .15 each and ink was .30 for 2 oz.    The body of the pen is a shiny steel/steel like metal.  It polished up with barely any effort and is in excellent, bordering on (but not quite) pristine condition.   The accessories are in equally excellent, albeit empty condition.  The box has wear but is totally intact.   Judging from the condition the set is in, it could probably work again if you know how to replace what needs replacing.    The set was made in the US.