The picture of this sundial can be found on the website of Bridgeman images, image no. SSI2206517. The source of the picture, the holder and any other information, except for the description ,Close-up of a Greek sundial' and some non-public information on the dating (350 BC), is unknown.
This object has not been measured by the 3D pipeline. Its entry in the catalogue rests on the published description only; no surface fit, latitude or line detection exists for it.