This year will see a possible end of an era for two of America's most famous retail brands.

2021 could be the last Black Friday ever for Sears and Kmart. When the two historic brands merged in 2005, there were 3,500 stores nationwide.

Now, shoppers will only find 21 full-line Sears stores left and just six Kmart stores.

Retail experts predict those numbers could dwindle down to zero over the course of the next year.