After looking for a long time I found one in like new condition. I ordered the new 2.5" and 4" barrels from Dan Wesson (yup still in business) and I own the whole set. I have fired every double action out there (more or less) and if there is one 44 close to a python this is it! I am elated.
My dad is a big fan wessen fan, he has the 445 with 2.5,4,6,8" barrels and a 357 with 2.5,4,6,8,10 barrels. They are definitely interesting pistols. Make sure you always use the feeler gauge when swapping barrels
It do look nice Fotis. I had one that looked just like that one. I sold it about 3 months after I bought it. It had some serious problems and Dan Wesson was going threw some financial problems and was turning out sub quality guns. The barrel was nickle plated and the plating was pealing in the bore and I dug a pound of casting sand out of the action. Dan Wesson wasn't answering the phones and I unloaded it. This back in the 1980s and I loved that gun even after I clean the sand out of it but could accept the plating pealing out of the bore.
A friend of mine has picked one a little while ago, (caliber escaping me at the moment, but believe it to be 357 Maximum) and used to have a blued model with three different barrels in 357 Mag. Nice pieces.