Los Angeles Civic Center bread plate - Wallace

In 1960, if you were to be on the Los Angeles City Hall observation deck and looked to the south, you would look over the roof of the State Building to the front of the LA Times building. The City Hall, built on Spring Street in 1928, is probably the iconic LA structure (at least to Angelenos) and still stands in essentially unaltered condition. The State Office Building, built on the northwest corner of First and Spring in 1931 was damaged in a 1971 earthquake and demolished a few years later. The fortress-like LA Times building was built on the southwest corner of First and Spring in 1935 and is still recognizable though modified. There was surely some intermingling of affairs but as far as I can tell, the only real connection between these three buildings is that they stood in a row on Spring Street.

So the question is - where was this plate from? I have never seen another one, though there has to be more. It is not from the service used in the City Hall cafeteria. Could have been from the State Building; I doubt that it is from The Times; maybe from the diner across the street?

6 3/4" diameter vitreous china bread plate with Wallace backstamp (1960 date code - looks like 8P in photo, but is actually 8B).