This pair of stamps is on the east side of North Magnolia Avenue between Vine and Fernwood. I’ve been striking out a lot recently on identifying contractor histories; I wasn’t able to find anything on Dumeney. It doesn’t help that there was a Gary Dumeney who served as the spokesperson for the Meridian Township Police for many years.

This is the northern stamp. Hard to make the date out on this one.
Easier to make out the date on the southern stamp, but it must be a low area and it’s been raining recently.
Looking north on Magnolia.