I cannot find a stainless .44 mag made by Mitchell, but they did make a nickel plate. Values range from $425 at 100% (new in box) to $180 at 70%. If nickel finish in good shape, add $50. Mitchell produced a .44 Mag called the Valkyrie, available in stainless steel and blue. Retail price last year was about $700 NIB. More Firearm discussion? Click here for the best the web has to offer. http://fieryimp.proboards34.com/
Revolver made by D Wesson chambered for 357 Magnum
75-275 or so
You will have to call Rossi to find out.
100-450 or so
100-400 USD
100-300 USD
50-500 USD depending on specifics
50-250 usd
1991 PX 22
No way to value with just the sn and no other details
Your Charter arms revolver will bring between 120-175 dollars in the condition that you describe.
100-300 USD