1959 Ruger Blackhawk Flat Top 3 screw, unfired in original box. Chambered in 357 mag wearing a 4 5/8 inch barrel. A true gem of Ruger history.
The 1955–1962 Blackhawks are known today as the "Flattop" models, because their adjustable rear sights were not protected by "ears" extending up from the frame as later became standard. 
This gun does not have the tranfer bar retrofit.
MN buyer needs MN state ID and permit.
Out of MN residents pay $30 shipping to local FFL for transfer