They are all hand made by college students and artists!

These were my late father's, i have no use for this set so i want to sell it, what is it?

Hi! Posting for my mother, not sure if this is the correct subreddit!!
Her favorite set or porcelain baking dishes have this weird discoloration/stripes, is the glaze cracking or something? Can she safely use this?

She would love to keep them so I figured I’d turn to Reddit🩷 cheers