Ruger 77 RSI in 308 Value??

[35Rem]

Hey everyone, what would the value range be for a Model 77 RSI (Manlincher stock) in 308 Winchester be worth.  It's in good to ver good shape.  Slight blueing wear on the edges of the end cap on the muzzle and a little on the bolt handle. Stock is solid, a couple of small dings and scratches, what i would call normal wear.
Serial number starts with 78-28xxx
When was it made, too?


Thanks