ID in this catalogue SS Berlin ÄM 22824 
Type Sloping (gnomon only)
Current Location Ägyptisches Museum, Berlin 
Catalogue Numbers Äm 22824 

Purchased by Borchardt in Cairo from M. Nahman (Rau 2002)

Origin is unknown 

Date Unknown 
Dimensions H 72 mm, W 40 mm, D, 40 mm (Rau 2002)
Material Black Stone (Rau 2002
Markings and inscriptions Has a hole for the plumb line and parts of an inscription  
Notes This is the gnomon part of a sloping sundial 
Literature Rau (2002)

Rau (2002) with an image is available in English here