All these cartridge guns converted to shotguns in England went to the proof house and got proofed as shotguns before they went back to the customer. British are very strict on these modifications, and even if it's the owner having the work done, it doesn't go back to him without being proofed first.

It was always to my understanding that if you had the money Winchester would do anything you wanted. He should get a letter.[ftp][/ftp]

Mr. Tipup
This is a classic example of some feather merchant running up the price cause its old and in nice shape so it must be worth a fortune. I looked at a Wesson 2 trigger tip up at a show some Harlow Parkenfarker sanded down the stock, took the action down to the local bumper shop and polished it on a wheel until there wasn't a straight line on it and then had them re-chrome all the bright work. Then he hot dipped the bluing to a dark purple. He had a $3,000 price tag on it when I said the price seemed a little high he exclaimed "Its museum grade". 
I wouldn't pay $33,000 if Pope himself got up out of his grave and told me how he did the work.
There's a sucker born every minute

40 Rod