Modular lids (each one is a square) that usually come in pairs or more, so that a rectangle is formed Each of the squares consists of two triangular parts, with the opening of the lid being done by lifting one of the triangles. The numbers 1-4 number the different triangles that make up the lid.
FERB - FONDERIE Ezio Rossi BERGAMO TIM - today belongs to TELECOM ITALIA
This manhole cover is identical to another lid, and differs only in the name of the covers consumer (which, as mentioned, is a company that currently belongs to the one indicated in the other lid) Click for cover's details