This one, on Regent St. between Kalamazoo and Elizabeth, is a strange example of a sidewalk stamp because it’s much less informative than they usually are. There’s no date and only initials for the company name. It’s also very worn. What does this say, anyway? OSM? O&M? Maybe I can find another one like that’s less worn…

… Yes, just a house or two down there’s this much cleaner one. It’s a little odd that it’s so much sharper given that I suspect they were done around the same time. The middle letter looks less like an S here, but also doesn’t quite look like an ampersand.

Update 8/8: I have determined that this is probably the city’s Operations and Maintenance department. That is an oddly stylized ampersand; I wonder when the stamp was created? They probably used the same one for years.