I have recently watched several auctions of GB's with one or two mags end in the $1,100 plus range on Gunbroker. If you were to put your complete setup in a GB auction, my educated guess would be a selling price around $2k. There are some variables like condition of the pistol and the mags and any accessories you may have. Prices go up from there. You may also want to consider Rock Island Auction services for something as nice as you have. Collectible Firearms for Serious Gun Collectors | Rock Island AuctionI'll keep you in mind.
There must be some other opinions here ?
Best of luck! Dang fine looking pistol!