6= Oakland, J= 1951, P= series 3100, D= April
That does NOT mean you have a 1951 1/2T panel, it just means that's what the numbers mean. Anything can happen with titles/old trucks. There are AD gurus on this site that can tell you by seeing pics of it. Look in our gallery to pick up subtle differences in years. A big one is vent window started in 51. BUT
doors can be switched.
Check the motor serial to help verify.
