I have a bunch of old bottles that someone gave me and I'm wondering what 2 of them are worth. They are both the same and they both say 'Saxlehners Hunyadi Janos Bitterqelle'
on the bottom.
I suggest that you do a search of eBay's "completed items" to get an idea of the market for Saxlehener's Bitterquelle mineral water bottles.
I don't think you could give one away at a bottle show; but, you might sell one at a flea market for a few bucks. They make nice window bottles, but are not of much interest otherwise.