Identification
ID in this catalogue SD RMO F 1987/2.2
Type Semicircular 
Current Location Rijksmuseum van Oudheden, Leiden 
Catalogue Numbers F 1987/2.2 
Provenance Unknown, acquired in "art market" (Raven 1989
Date Late Period or Greco-Roman Period (museum web database), 8th - 1st C BC (Raven 1989)
Dimensions H 61 mm, W  90 mm, D 12 mm (Raven 1989)
Material Faience (Raven 1989)
Markings and inscriptions Thirteen radial lines marking twelve hour zones. A small round hole for the gnomon. A flat rectangular hole above it is linked to a hole in the upper surface and was used to suspend the sundial (Bickel and Gautschy 2014). 
Notes  
Literature

Raven (1989); Clagett (1995); Bickel and Gautschy (2014); Salmas (2014)

 
Images

An image is available in the Museum database here