Civil War twist pen in Antique Brass

The Civil War twist pen features a replica of the 58 Caliber Mini Ball used in model 1861 Springfield Rifle Musket for the cap, and a replica of a 44 Caliber Bullet used in the 1860 Colt Arms Revolver for the pen's tip.  The pen operates by turning the cap to extend/retract the refill.
 
That hardware on this pen is Antique Brass.  The wood used is from hewn oak log that was pulled from the Big Sandy River that runs through Kentucky and is believed to be over 100 years old.
 
It uses a Parker style refill and is item #368