Not to my taste but an interesting topic of discussion nonetheless..

From the sellers listing:

Extraordinary Over/Under RISING BITE .470 cal. sidelock ejector. Chopperlump barrels with quarter rib, one standing, and two folding sights tapering to full raised rib signed "Jno. Rigby & Co., 13 Pall Mall, London" in gold. The massive action features double underlugs, the rising bite engaging a top rib extension. A conservative estimate to replicate this rifle would be in excess of $150,000. The sculptured fences and signature drop edge locks, are gamescene engraved with lion and elephant by Ken Praeter, who was the house engraver for deluxe Holland & Holland guns for many years. Highly figured wood and as new condition make this a most unique rifle for your collection or next safari.

$85k is what they have it out for..