Most people don't give a second thought to the old casserole dish pushed to the back of the cupboard or the dusty mason jars lined up in the basement. These things feel ordinary, almost invisible. Yet ...

Add Yahoo as a preferred source to see more of our stories on Google. empty mason jars - Julie Bowman/Shutterstock There are plenty of Mason jars still around from Prohibition, displayed in shabby ...

From vintage Pyrex to versatile Mason jars, here are 13 valuable treasures that experts say could be hiding in your grandma’s kitchen cupboards.