According to the SERVICE STANDARDS booklet for the 1952-53 Kaisers, page 18, the bulb type should be an 81 for the pillar light. This was also used on 1951 Kaisers.
Be advised that for some reason ground contact on this assembly to the body is sometimes erratic and the switch itself sometimes need repair. I speak from owning 4 1951-53 Kaisers over the years.
