2426 108th Avenue
I confirmed this date in the field, even though it felt like a 1925. Sharp’s early marks used a stamped date and were not hand-drawn.

4017 Balfour Avenue

2007 12th Avenue
I have never before seen a sidewalk mark with a metal date. Eastern cities like Chicago, Buffalo and Toronto have old brass sidewalk marks, but this is the nearest to such a thing that I’ve found in Oakland.

2434 11th Avenue

E. 33rd Street at Park Boulevard