John P. Lower (1833-1912) Denver, Co. Apprenticed to J.C. Grubb in 1850 of Philadelphia. Moved to Denver in 1868. This is according to Sellers.

We know that T.L. Golcher, also of Philadelphia, was selling these guns for a time. So it is possible Lower had the contacts.

You will need to post pictures of the gun. Here is a link to help in posting photos: http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=148935#Post148935

Pete