I doubt that gun is a conversion.
It does remind me of this:
http://www.montywhitley.com/antique_arms_fine_sporting_guns/SHOTGUNS/1382I think Scott had something to do with the early Holland Royals. I would have to look it up to be sure, though.
I bet Greener bought the gun in the white from someone else and then finished it off.
The checkering looks like some Greener-styles that I have seen. It's interesting that it doesn't have a border on it. Again, this is something Greener did on his guns. I don't really like it, but I guess they did.
I can't decide on a restock or not. Also, the triggerguard looks reblued and some other pieces look refreshed, but I would have to have it in my hands to really tell.
Regardless - it does seem very over priced.
Also, I think it's a true Greener. I think the quote above is in reference to stuff like this:
http://gunbroker.com/Auction/ViewItem.asp?Item=74346763I've seen a lot of Belgian POS guns marked Greener.
OWD