Most Natural and Sunburts finished guitars seem to be three-piece bodies, painted ones may be more.
Necks are Maple, and are constructed from one complete piece if they have a Maple fingerboard.
Pickup Codes: OOWWYY Example: 202378 - It is believed the first two digits are an operator designation for the person operating the pickup winder, this according to Abigail Ybarra herself.
The second pair of digits are the week, but I have seen one example where the second digits were 72.
Be aware of another code found on these pots, 013446.
If a solid paint color was applied to the body it was applied right over the shielding paint which may make it hard to see. Finish: Polyester (Aliphatic Urethane Coating), or "poly" as it's most commonly knows as in the guitar industry, was applied as a sealer/basecoat.
Some might go by the pot codes, but those could have been stock a year or more old by the time they were put into the newly finished guitar.
Or perhaps the guitar was even assembled by various parts picked up over the years and is being passed off as "All original".
Late 70's Strats have the serial number on the headstock below 'Fender'.
The number will have an 'S' prefix (possibly an 'E', read below) followed by a six digit number.
First four digits are paired up, 09 is the model number for the Stratocaster, and 00 is the neck configuration, in his case a fretted Maple neck with a Rosewood fingerboard. 38 is the week, 9 stands for the year, 1979, and 3 is the day of the week, which is Wednesday.