That sure looks like original checkering, grip cap & spacers. It's a more elegant monte carlo than I recall on Mark X stocks but I'd say original stock all the way until proven otherwise. Very nice wood for that model. Very nice. I have 2 Whitworth, American Field models I believe, with much less grain than that. That's a keeper.
“When Tyranny becomes Law, Rebellion becomes Duty”
Colossians 3:17 (New King James Version)
"And whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him."
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