I think that (following explanation ) 0
is just "manufacturing batch on the particular die" and have nothing to do with "new" or "worn" die.. Die`s (I guess) not getting next number when they getting "older" , but just "having" number from make to destroy .. If You know what I mean..
Anyway, I need to explain a few things which I should say on first post:
Ist NOT my invention - I passed information from our Polish web page Tawerna.pl JSB batches
Where original post was posted by Sharg
which is one from Polish distributors. They contacted JSB with question regarding batches.
But - after Ive read Your comments, I send my own question to JSB asking to explain Yours questions.
Will post answer soon as I get it.