antique white work embroidered linen table runner Stag and Hounds filled outline hand stitching drawn thread

Very unusual design on this hand embroidered flax linen table runner. It's a scene of stag and hounds worked in white on white, with a drawn thread openwork lace border.

This measures 50" long x 17 1/2" wide. There's no fabric thinning or wear, but it does have some spots (see photos) which I have not tried to remove. I haven't washed it at all.