100-500 usd
75-275
No such weapon in the Ruger line
About $300.
Depending on condition, 50-175 USD.
Primarily in the magazines; Mark II has a bolt hol open also
Contact ruger and request a owner's manual
If it's a MK II, it will be marked as such.
50-250
Ruger's site is not working for me. They have extensive sn data.
100-450
Which one?...The Mark 1's and Mark 2's are pretty valuable...