My regular shield marked veribrite 1941 has the more “open” P like your motor oils shield (which is also an early version marked veribrite I’m assuming) Does your regular shield have a makers mark?
motor oils shield has veribrite no date - 1st regular shield no markings upper picture,
2nd regular shield pictured below has markings of SRS '54 & measures 29 3/4"
P in 2nd regular shield matches P in motor oils version
notice both my regular versions have 2 holes in the bottom,
don't see any in yours .. ...