It is likely an ancient Muslim gravestone transported from Antioch by merchants.
From the en.wikipedia.org
On that trip, Gus Cannon had just gotten a gravestone that someone had organized.
From the suntimes.com
Nunn stopped by because he wanted to add some details to his gravestone, he said.
From the kentucky.com
The Navy said a gravestone bearing the names of all 16 men will be erected later.
From the washingtonpost.com
Glennon has the best arm of the group, but he is about as mobile as a gravestone.
From the sacbee.com
On November 23, 1958, an unknown person removed the gravestone from the gravesite.
From the charlotteobserver.com
The chapel also has the oldest gravestone in the cathedral, dating back to ca.
From the en.wikipedia.org
Until the late twentieth century, the cross-topped gravestone bore no inscription.
From the en.wikipedia.org
A gravestone from 1855 for Maria Millhime was found near the Fostoria runway.
From the toledoblade.com
More examples
A stone that is used to mark a grave
A headstone, tombstone, or gravestone is a marker, normally carved from stone, placed over or next to the site of a burial in a cemetery or elsewhere.
Gravestone was a heavy metal band formed in Germany in 1977 as a Progressive Rock band before going in to Heavy Metal.
A stone slab set at the head of a grave
(Gravestones) Three of the stones marking the wealthy tombs of Grave Circle A in Mycenae, Jacobovici states, appear to depict the parting of the Sea of Reeds. ...
A stone placed on a grave to mark it, often bearing an inscription listing years of birth and death, name, and perhaps an epitaph.
A special stone on a grave which marks where someone is buried