True enough, the 475 is rather impressive and depending on the load and barrel length, it packs a bit more energy than 1,700 lbs. Sounds like an engraved Wildey- similiar to what was referenced in the other responses.
I am lucky enough to have a Wildey chambered for that round and despite the energy and associated recoil, in a 5 lb semi auto, it's not bad to fire. At 25 yards, with the rear sight buried, the rounds still impact about 10" high- a problem I plan to rectify with the load rather than altering the pistol.
My claim to fame- at 400 yards, with a large dirt field/hill behind the target- and after seeing the dust cloud impacts and adjusting, I managed to put the last three rounds (of 7) on a 14" x 14" target.
As usual, I say: "Go buy it!" With the engraving, that sounds like a decent deal. I am tickled with my two (unengraved, but with the factory wood presentation box)- the 475 Wildey Magnum as well as a 45 Win Mag.
'Nuff said?
-Harvester