Tom,

Here is the list of what Michael intended to keep when he knew he had to start selling his collection. Somewhere among them would be his ultimate one "keeper"!

I suspect Dan has it right, either a Neidner/Shelhamer rifle or a Schaefer gun.

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=381779&page=3