I agree with Jim, type one band (looks O.K.). The stock has had either a type 2 or type 3 band on it at some time.
Swap out the stock for the right one. You need an I cut highwood. It should have an RMC in a box with a large CC under it on the right side. That's the easy part. Then turn the rear sight around and hope the dovetail is O.K. Thats the harder part. If you don't have the tools seek advice on this.....Frank