This is one of my favorite curiosities to catalogue, a diagonal stamp. All of the diagonal Department of Public Works stamps I’ve found date from 1921 except one (which has a 1924 date). Some specific foreman must have favored diagonal stamps around that time, or at least that’s my theory.

This stamp is near the northwest corner of South Holmes Street and Hickory Street, just barely on Hickory.

The date is hard to see if you don’t know where to look. It’s underneath and at an angle to the name stamp, facing vertically in this photo. This is taken from just east of the stamp, facing west.
This one is taken from the south edge of the slab, facing north, in order to orient the date right side up.
Standing at the corner of Hickory (on the left) and Holmes (on the right). The stamp is on the extra-wide block in the center of the photo.