DESIGN:
The wheel and spoke design was one of the most common designs of the late 19th and earlier 20 centuries. The oldest in New York of course is the 19862 cover in Central Park (see below.)
UTILITY:
The wheel and spoke design was often associated with drains and sewers.
RANGE:
This item is behind the carousel in Brooklyn's Prospect Park. The design is fairly common, but the whispy, easily worn away inscription is not seen very often.