Well we were just discussing T.R.'s double in another thread, and "poof" one appears in the same specs and vintage. God does work in mysterious ways, and he even made sure this one was priced properly.

WLM: http://www.williamlarkinmoore.com/Arrivals.htm

HOLLAND & HOLLAND, SxS Double Rifle, Royal "Deluxe", .500/.450 3 1/4" NE 480 grain bullet, 70 grains Cordite, 26'', DT, Pistol Grip with trap grip cap, Splinter Forearm with lever release, 1/4 rib with express sights, "Deluxe" Celtic style Ornamental Scroll Engraving, Silver's Pad with leather face, Extended top & bottom tangs, Gold line cocking indicators, Purdey style third fastener, Flip up ivory night sight, Good bores, 10# 8oz, all original and untouched, mfg. 1900.