This is an Edwardian era English darning mushroom or darner made of black ebony wood or treen with a turned handle.

The antique turned wood handle has 2 incised rings and is in two pieces, as the head removes from the handle.

The darner was made in England 1900-1910 and measures 4.5 inches long by 2.25 in diameter.

I would call the condition good ++ because of a number of dents, cuts and signs of use, which is actually great antique patina. 

A lot of character and is very collectible. Neat!

The darning tool is a great decorative accent as well and a great vintage sewing gadget.