Rumors of "Executive" guns and coach guns for railroad executives originated with a person with whom Tom and I have had contact, and he continues to post on the 16g Society and Shotgun World sites regarding his "special order pre-production" guns. I have offered to pay for Research Letters to confirm the records if he would share the SNs thereof, including what he claims to be a Regular frame 20g, and he has declined.

“Special Order Guns” 2-12-2011
https://shootingsportsman.com/community/guns-ammunition/sharing-l-c-smith-information/
I pass along our families intimate knowledge of Hunter Arms from time to time. After 1913 Hunter Arms changed drastically, due the death of John Hunters Srs best friend, and silent business partner. These gentlemen built railroad and steel industries together.
All Weapons produced by Hunter Arms have matching original SN numbers on each part of the weapon, even the Executive Guns and the gifted Coach Guns to the different Railroads, identifying them as Hunter Arms L.C. Smith weapons.

More
https://shootingsportsman.com/community/guns-ammunition/ornery-old-men-a-4-person-l-c-smith-contact-friendship/

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=519924&page=1

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=520616&page=3

http://www.16ga.com/forum/viewtopic.php?t=22027