Question
How do you determine/identify a vehicle identification number having the letter "O" (as in "Oscar") or the numeral 0? The Arabic number 0 can be confused with the letter "O."
Answer
It is numeral 0. The letter "O" is not allowed according to
https://checkventory.com/articles/whats-your-number/
. Apparently letters "I" and "Q" are not allowed either (presumably due to their potential confusion with numerals "1" and "0").
We believe that ISO 3779:P2009 is the document that governs VIN characters.