I was curious, so I went to the Corelle website and only found this: "Corelle dinnerware has come in many different patterns over the years since it was first introduced by Corning and continued with Instant Brands, and many vintage/legacy pieces have become cherished collectors’ items. Before 2000, and before tighter lead content safety regulations, a small amount of lead was an ingredient in the decorating process of many household products. Instant Brands has conducted additional testing with an outside laboratory to determine whether vintage Corelle products made before 2000 comply with today’s consumer [your] expectations as to safety and whether it’s ok to use them as everyday dinnerware. The Company selected multiple patterns of vintage Corelle products, dating back to 1978 for testing. The food surface contact testing was designed to identify whether any small amount of lead that may have existed in pre-2000 manufactured Corelle product leaches from the product in amounts above today’s acceptable lead-safety regulations. The small amount of lead used in decorations pre-2000 was encapsulated in glass before and after the decoration was applied to product and fired to above 750C. The Corelle manufacturing process has always encapsulated decoration in glass, using extremely high processing temperatures to ensure the glass decorations are sealed, which prevents food contact and intentionally decreases the extent of any lead migration to food. The testing confirms that the vintage products tested comply with current FDA lead-safety regulations – so feel free to use them for everyday dinnerware." So it sounds like you can keep and use all your treasured vintage dishes. Unless someone finds science saying otherwise. More on reddit.com

My wife is a vintage pottery and ceramics collector and she lead tests everything she considers bringing into the house and we’ve been eating off the blue corelle for a decade now. So either it’s fine or she’s trying to kill us More on reddit.com

Corelle are imposible to get rid off. I still have my grandmas dishes and she passed away around 20 years ago More on reddit.com

Arcopal was way out of league at its time. I spoke to them and was literally crying begging to come back but as they say good things don’t last forever. As a kid I used to hate when my mother used to praise arcopals and duraflex but now I’m my mother 🤣💀 More on reddit.com