2020-11-03 08:15 PM
2020-11-03 10:19 PM
I think approaching ST or a distributor directly would get you a better chance of a quick answer.
There are mostly users and volunteers on this forum, having the same information available as you.
But the LM317 is relatively cheap and produced by several vendors, there is hardly any money in faking it.
I remember a time when datasheets used to contained such assembly code information...