Round lid surrounded by a square frame. The gilded interior is less fit to withstand loads than the non-gilded version, as shown in the listed numbers (5 ton vs. 8 ton) There is an identical but not gilded version
Translation of the text on the cover: Department of Light The emblem of the city of Ramat Gan Yetzikat Hamifratz 1998 The Standard mark of the Standards Institute of Israel 400 5T