MKII Government Target Model

[recumbent]

I have a new in the box unfired Ruger Stainless Steel Goverment Target Model pistol.
Catalog #KMK678G, Model 00185. This is the bull bbl, complete with all paperwork and test target as shipped from factory.Made in 2004 or 2005 as near as I can tell from the Ruger web site.
I'm contemplating selling it.
Does anyone know what the value is? Or what I should sell it for.
Thanks
Bob

 

[1gunsnotenough]

They bring $600 up.