I will keep looking, and thanks to everyone for the help. It would just depend really on whether they have the time/inclination to help.
Yes, the distillery is usually helpful when you write them. I have never written to a distillery in part because I never thought that it would do much good!
Correct me, Kilost, but I think you are asking about label markings, or numbers stamped right on the glass, on general release bottlings, so that one could tell, for example, if this bottle of Talisker was bottled in 2005 or 1998.
Someone has addressed this, and if no one answers here, I'll look again later for the pertinent thread.
I know this topic has been covered before, but I am unable to find it in a quick search.
I believe the precise codes will vary from company to company.
The following is from Leither posted in Q&A: “Uigeadail” and dated Sept 22, 2006!
“Okay, I think I can help you crack the code which many bottling lines use.
It would just depend really on whether they have the time/inclination to help.
Theer are ways to date the glass (by looking at size and production method and the compounds, but probably even more) and the paper used for the labels as then it can still be a fake whisky where they used old paper and an old bottle, so you'll need to get the whisky checked out as well.