Dead men give no hasgachos>>>>>>>>>>>>>>>>>>>>
But their widows or children have been known to sell their certification stickers long after the man’s death.
For years after his death the widow and children of a certain rabbi peddled his stickers for candy products.
I was an owner of a kosher deli/restaurant in the late 1970s that sold the product in retail packaging. The widow called a month before Pesach offering to sell me the stickers to affix to my current stock for the bargain price of $1 per sticker.
I reported it to our supervising rabbi and he told me he was aware of her retirement funding scheme. I removed the product from sale and never carried it again.
Edited