Un-plundered Tombs were found in Tanis—one with a silver coffin but these were done in WW II and didn’t get the PR that Tut did! The findings of two Royal Tombs was bad luck for the French Team that found them because no one was interested! Sad Really because they were important finds.
I find it fascinating that these curses have so much power, even after thousands of years. The team that excavated King Tut’s tomb ended up dying under circumstances that can be easily described as attributed to a curse and then of course, the two that you mentioned. Makes me glad I have a superstitious side to me to prevent me from messing with stuff I have no business messing with.