I had a terrific hunt under less than ideal conditions (hot and dry) at a home built in 1828. It is rumored that the home has hosted 4 US Presidents. I can't wait to return when the soil is more moist and conductive.
Notwithstanding the hard dry ground, I found:
a nearly perfect pair of...
Went out to a piece of city property next to a graveyard, may have been a park according to old maps. This was pretty shallow, nothing on the back but the edges are rolled over.
Managed to straighten it a bit and this is everything it says!