Engine
Serial# :
. D=1946
. B=Reg. Prod. 1/2 ton
. A=Flint MI
. #'s=Sequence
Head # was used thru the 40's. Standard 216. Between the exhaust valve of 4 & 5 there is another number like "L26 6". The L is the month, 26 the day, and 6 the year; so Nov. 26th, 1946.