From that series that you see above, I have several hundred bills, all starting with 88888 with various combinations like 88888237 (Lucky numbers for Horse as well as the other Chinese Zodiac lucky numbers), about 45 bills that start with 888888 including 88888880-88888889. Where I struggle is with the meaning of combinations of numbers. I've read that 4 means death but if the number is 848 then it implies wealth for 8 lifetimes. 74 might mean "Death for certain" but 78 might mean "Wealth for certain". I have a very big Asian community where I live, maybe second only to San Francisco and New York but figuring out WHO to contact is the challenge. BTW, I am assuming you took those notes during COVID to keep safe.....hahaha.
The big thing about US notes vs. other countries is that we have 8 digits in our notes which means that it is roughly 1 in 96,000,000 chance of landing solid 8's vs. some countries currencies that only have 6 digits meaning that solid 8's occur as 1 in 999,999 which is a LOT more frequent.
I've contacted Stacks Bowers about auctioning off my bills but I have a pretty good feeling that they'd struggle with good Asian combinations. I searched for license plate numbers that auction off at a high price to get some idea of what other good number combinations to look for in my notes. I have several from the 200's like 88888268 and 88888222 as well as 88888226.
Another big challenge is figuring out WHICH notes to professionally grade. I think the complete 10 note set 88888880-88888889 should be graded as well as the number above 88888666 but then it gets a bit tricky because grading isn't cheap.