DESIGN:
The design stems from earlier wagon wheel designs with the addition of two crossbars forming a badge (not used in this case) across the center.
UTILITY:
In both its design and in its placement this design was frequently associated with drains and sewers, especially in city sponsored projects such as parks, housing or in this case expessway building.
RANGE:
This design can be spotted throughout the city, with inscribed dates ranging from 1949 to 1998, and with seemingly newer variants still being installed.*