They are fine. Even better than some of the new ones. Many of us have talked here before about using lids even older. And it has the benefit of using things that belonged to her and the memories associated. Enjoy them.

Dave

Although it's not within the recommended guidelines, I've used lids from the 1950's and 60's with NO seal failures.

I'm with Dave on this one. The older are often sturdier with more sealant.

Do check the instructions on the box. The oldest lids will require boiling while newer lids don't. It depends on the sealing compound.

Carol

Thanks! I wouldn't have known to check the box to see if I need to boil them! Appreciate it!

Heather, this is a bit off topic from canning, but relates to your stash of your grandmother's lids. If you decide to use the lids for canning, you can still keep them after opening the jars by using them in craft projects. Do you cross stitch? They are many patterns available using canning lids, new or used, as the backing for cross-stitched pieces. They can be used as jar toppers (candy, nuts, dried beans, etc), Christmas ornaments, and other things. I expect a Google search would yield many patterns and ideas. I'm a sentimentalist, so things like this appeal to me.

Just a thought,
Barbara in Virginia