Posted By Lummox on 04 Dec 2020 06:44 PM
Not wax
Cheers Ross for ruling out wax.
It must be some type of sticky resin paste.
One that I saw some time ago that had a broken glass label, you could see the original material used to secure it to the bottle. It looked like a dry paste rather than a tough hard glue and was easy to scrape off, which made me think It could be wax.
It was almost like a linseed oil putty used for old wood window glass frames.