Looks very similar to a piece I saw in a local antique shop.
Shape is identical, but the skillet handle had lettering "11 inch" on it.
It also had three legs on it, but they were intact and not ground down.
It also had the matching lid.
It was a W.C. Davis & Co skillet.
The lid had the name and a patent date of 1863 on it.
They changed their name "Great Western Stove Works" just before the end of the Civil War.
Went on the become "Favorite Stoveworks" which later moved to Piqua, OH.