Vintage Marble Celluloid Mechanical Pencil with Advertising Iron Works, Wichita

Description

Here's a vintage marbled celluloid mechanical pencil with advertising.  It says "Geo. C. Christopher & Sons Iron Works, Wichita, Kansas."  It's a Realite made in USA.  It's in good working condition with led inside.  Please view all the pictures as they are part of the description as well as condition.
Have questions?  Please don't hesitate to contact me before bidding and thanks for looking.