VTG Sheaffer Ball Point Pen Marble Style Copper Color Base Desk Set Made in USA

Estate sale find! Vintage Sheaffer Ball Point Pen Marble Style Copper Color Base Desk Set Made in USA. Unsure of base metal - could actually BE copper or perhaps brass? Pen has Shaeffer Made in USA etched on it. Has a Sheaffer ink cartridge inside - Blue color ink. In good pre owned condition. Has wear from use: scuffs, light scratching, and chips in a few spots of the base. See photos for details.