They are well-rounded and offer real communication.
Guitars with no serial can only be dated by spec to when that guitar is shown to be available.
These ladies make sure that the high standards are met.
Plate number J 000001 is on a 93' Donnie that I will always consider Jim Donahue's guitar, now residing in the Hoshino USA collection.
In cases where generic non model specific plates are used the 4 digit number is just the consecutive number of that plate which could have made it on possibly 10 different models.
Just because a P1 is not available in the US in 97' doesn't mean it wasn't still available in France.