ChatGPT said:

Manhole covers made by this manufacturer are typically made of metal and come in square , round , or rectangular shapes.

No colored or gilded covers were found for this manufacturer, nor any city emblems.

The intended purpose of the cover does not appear on many of the covers. On some, the word FOGNATURA (sewer) appears, on others the name of the electricity company Enel , or the word GAS .

The year of manufacture usually does not appear.

Most covers bear the manufacturer’s emblem .

Standards
The European standard EN124 and its associated load classes are found on many covers, with the most common load ratings being C250 and D400 . The Italian certification mark IGQ appears on many covers , as does the Italian UNI standard .

Typical Covers
Many covers belong to the Ispezione series , others to the Signum series , or to the Urbe series .
Another common model is the Eclipse, a particularly elegant cover featuring raised circular patterns that create the illusion of a hill in the center of the cover (resembling the works of painter Vasarely) . There are 41 manhole covers in the site that are made by the Manufacturer
Click for the 41 covers made by Montini (Of these, 2 are best covers)