Dating vintage canniong jars
Be sure and throw it away where animals won't get into it.
Of course I'm assuming you know that you need to throw the food away.
We're remodeling the house, building a better life for us and our children. There's pecan trees, chestnut trees, pear, apples, blackberries and more. Also be sure and clean them well and I would suggest even sterilizing them by boiling them.
I found some old old antique canning jars under the house in the cellar. If there is any botulism there it can make animals just as sick as people.
They are well used and that is ok as long as they are in good condition. they light up automatically at night when the sun goes down. The regular mouth one I put in a quart size vintage jar that is a pretty blue color.
Better yet, Ball's new jars fit these solar lights too!
(This was during the Napoleonic War era and was done, not surprisingly, for military reasons.) Appert's experiments with the application of high heat along with the exclusion of air from a sealed container led directly to the development of a canning process in 1809 (and Appert's award of the prize money) that allowed for the relatively long term storage of animal and vegetable products in sealed containers of various materials (Munsey 1970; Roller 1983; Bender 1986; Jones 1993).
Appert's process involved the killing of the bacteria by heating followed by exclusion from further contamination in a sealed container, although the actual scientific reasons as to why the process worked were unknown at the time.
Glass in particular, provided a combination of unique qualities not available with early day ceramic or metal containers, i.e., ease of manufacture, impermeability to the atmosphere, and inert in contact with virtually all food product contained within imparting no "off" flavors (Bender 1986; Jones 1993).
(Note: Bender  contains an excellent though succinct overview of early 19th century food preservation efforts, although the book is primarily devoted to the major closures used by the glass packing industry during the first half of the 20th century.) Although the variety of different shaped glass containers used for food products was quite extensive, many classes of food bottles and jars do share a couple traits in common.