If you want a fabulous gun that was made to be shot and not just looked at, you want a Fratelli Rizzini.
http://fllirizzini.it/siti/sitoingl/photo.html
These boys have taken the English side lock and made it better-much better. If (when?) I win the Powerball I'm flying to Italy to order a pair of 12s for driven birds, a 16 for prairie birds and a 28/.410 two barrel set for doves.
http://www.csmcspecials.com/product_p/22823.htm
Their R3 box lock, with a unique approach to intercepting safety sears, costs almost as much as their side lock. It is an engineering marvel. And it works.

If you really want to spend some mula get a Hartmann and Weiss.
http://www.hartmannandweiss.com/en/shotguns.php
They are the ultimate expression of the English game gun, even though they are built on the Continent. They are so sought after by collectors that very, very few of them are ever fired. Pity. I would shoot the snot out of one if it were mine.
These guns are so rare, and so sought after, I can not find any of their shotguns for sale. Last time I saw a new one I believe it was over $200k.
Please let us know what you end up getting. I will gladly help you fill out the order form.
Regards,
Jeff
P.S. Sometimes I am almost saddened by how much I know about shotguns. Almost grin

"We are men of action. Lies do not become us."
Wesley