Re: '69 Decode help
The 02323 is part of what was called the DP SEQ NO, the number was anywhere from 8 to 12 digits long and they often only placed the portion of it that helped them ID this body along the body shop lines so that when it came into the body bank on the Chevy part of the plant, it got matched up to the order in the Data Processing System. Each car had a unique set of numbers. On Leeds cars and ONLY Leeds cars, the DP SEQ NO is the Body number + 02323. So the complete DP SEQ NO XXXXXX 02323. (You Leeds built owners with build sheets, look and you will see)
It was used for internal plant processing and has no useful info on the car. Those were similar to the bar codes of today.
DP SEQ NO - Data Processing Sequence Number
There are letters only lower body tag from seveal of the GMAD plants like Leeds (KC) and Baltimore. No one has any idea what they mean, some think SS but they have been found on cars that were not SS optioned. It likely has something to do with in plant building of the car since the GMAD plants were charged with built other GM models on same platforms (Chevelle, Tempest, Skylard etc).