Chris No telling for sure but my best guess is household (vinegar, cleaning product, etc.) Age is mid 20th century. Searching for labeled examples is the way to research. For example, this generic eBay search. Here is a specific example similar to your bottle: https://www.ebay.com/itm/VINTAGE-DUCHESS-BRAND-CIDER-VINEGAR-BOTTLE-PAPER-LABEL-1-QUART-FREE-USA-SHIP/381752655854?hash=item58e23b3fee:g:ixAAAOSwFe5XxH3f
