These notes are a lot of 2 circulated $1 dollar bills with fancy serial numbers from the year 2021. These banknotes are ungraded and exhibit a unique trinary pattern in their serial numbers, almost binary with one number off.  They are uncertified and fall under the category of Federal Reserve Notes and Small Size Notes in the realm of US paper money and coins. This collection offers a distinct and appealing addition to a currency enthusiast's collection.  If you're collecting trinary notes, these are for you. 
Fancy serial numbers:  11518155  -  11944114