I think I can do this much:
67 = model year
3 = Oldsmobile division
52 = Delmont 88 series
69 = 4-door sedan
The "35269" is the first five digits of your car's VIN.
The general coding of body styles was:
87 = 2-dr hardtop coupe (often called "holiday")
67 = 2-dr convertible
69 = 4-dr pillar sedan (often called "town" or "celebrity")
39 = 4-dr hardtop sedan (also often called "holiday")
For '67, replace the "52" with "58" and you have Delta 88. Replace with "54" and you have Delta 88 Custom.