Item is in working condition.  Rollers are yellowed with age but all turn and set as designed.  Pen holder is missing its' screw on part.  The marble base is about 7" long x 2" wide by 1" thick and is heavy.  Felt bottom guard deeds re-gluing.  Believe this item may date to the 1920's give or take a couple of decades.  Corner by pen holder has some damage (see last photo)