There is an interesting coincidence. Recalling that the proprietor of AAAWT
(
http://www.aaawt.com/) , an antique dealer, is named David Hilliard, I went to the site, searched and found:
D.H. Hilliard Long Barrel Underhammer Pistol
This example with not often found...Remington Barrel
Cornish, New Hampshire
This example with serial number 88 is .36 caliber percussion with a 12-inch octagonal barrel that is marked "135" on muzzle and "2 - 6 5/8" under barrel. The original hooded front sight remains, as does the original peep rear sight. It is maker signed on top flat. There is a nice single leaf design factory engraved onto the top strap; 20% blue on top strap; 80% blue on rear sight, barrel is nice gray brown with no pitting and excellent metal surfaces. The cherry stock is excellent and has no varnish, perhaps oil finish only. There are 3 one-quarter inch diameter wood plugs in the back of the grip; probably at one time the gun had a non-factory stock. The iron trigger guard has traces of blue. As was customary when a maker used a high quality barrel from a respected source, he left the barrel makers name on the barrel to demonstrate the quality of the firearm. In this case the barrel maker was E. Remington of Ilion NY. The gun is complete except for one screw missing from the trigger plate.
You may want to contact Hilliard.
Hurricane