Thanks for the info! I’ll be looking for the correct rear rim. The batteries were newer.Nice bike! Rims aren't the same, looks like the rear wheel was replaced at some point. And the bike looks like mid 60's going by the rear reflector.
Those Murray made Sears branded bikes may be ID'ed by the serial number. Starting in 64, their J C Higgins brand name was replaced by "Sears", so it is for sure made after 1963.
From some research, I don't know if this is the same for all Sears bikes.
"The first number after the 502 suffix indicates the year. 4 = 1964, most Murray built bikes of this era can be I.D. like this." The next 4 digits are the model number from the Sears catalog.
Also, there may be original batteries in the tank, with a date code on them.
From the 64 catalog: