The 301 Stockman was offered with a serrated sheepsfoot blade from 1986 thru 89. With sawcut Delrin scales.
I have a old standard 301 with stag scales, but it was made with a undated (pre 86 ) main clip blade, has no spring rivet and nickel scale rivets. I have never been able to place my knife as a catalog offering. But, the old Custom Shop would make small runs of special designs and then they would be offered for sale through word of mouth, the factory store or some special reseller. Both the Op's and mine would be California period knives.
I cannot state it is for certain a Custom Shop or production knife with stag scales. It could be a special order ( such as SMKWs did frequently) made in the factory Custom Shop or they both could be made by a quality craftsman using factory metal knife parts. Neither has a K,B and H scale shield, but I don't think any stag 300 scales ever did.
So, after all that the OP's knife is a 86 - 89 Buck Stockman with serrated sheepsfoot blade. Both knives Stag scales are a bonus from somewhere. As I was saying over in another site, you have to consider several factors in putting a date on these folders. I am guessing he will receive some offers from forum stag hunters.....300Bucks
Pre 1986 301 Stag Stockman, (no date code). No scale shield. No spring rivet showing and nickel scale rivets. Also note the long pull. Who know's Camillus might have made this one.
Just for the look-see, here are two old Elk scale 301's.