I am seriously considering selling two Whitworth Express rifles, one in 375 and one in 458. The 375 is in new condition and the 458 is in excellent + condition. The 458 has three elephant ivory inlays (diamond shaped), one on the butt and two on the action area. Simple and tastefully done. What would be fair market value for each? I'm not interested in getting the highest possible price, I just want a fair price and move them quickly once they are on the market. I live in the Washington D.C. area.