Brian,
I believe you mean Los Angeles, not Van Nuys ? This is what I'm reading per Chevrolet's restoration booklet:

First digit = assy plant
20 = Los Angeles
2nd digit = year
1950 was designated by the letter H
3rd digit = series
p = 3100
4th digit = Month of year mfg
L = December
The remaining numbers represent the production #
1262 one produced.


Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.