Although it’s just about illegible, I am fairly sure this is a Lansing DPW stamp. I read the date as 1933, but 1938 is a possibility too. It’s on the west side of Allen Street between Michigan and Prospect.

Looking southwest on Allen with the stamp facing the other way on the closest slab. Not pictured: the two or three houses nearby that still have Christmas lights up. (I’m not complaining.)