Hi Barbara, either baking soda or cream of tarter can be used to remove the marks off your dishes. Just make a paste of either of the above with a small amount of water and scrub well with a plastic scrubby. The marks should vanish! Good luck.
Hi Barbara, hope this helps you out
This should help:
Bar Keepers Friend to the rescue. It works wonders on dishes and they make two kinds. Liquid or powder.
Bon Ami is another safe powder cleaner to use.
I have used Norwex Cleaning paste and it takes them right off! https://maurawhite.norwex.biz/en_US/customer/shop/product-detail/498315
I have done this often! https://www.exquisitelyunremarkable.com/2018/04/the-best-way-to-clean-scratched-dishes.html
I would try Bar Keeper's Friend
Bar keeper's Friend is a magical product for that purpose.