Here are four pairs of 8" (likely) RACO lights with what appears to be two RACO/Griswold mechanical bells. Notice how the median signal on the opposite side of the street has 2 pairs of 8" lights while the other appears to have 1 pair.
Unfortunately, this crossing has changed dramatically according to Google Street View. The crossing has changed to four gated signals with 12 pairs of 12"x24" US&S lights and two General Signals electronic bells.