I would echo lugnut's advice and add that if you are located within an easy drive of the Chicago area, you should have some interest on local sites such as Facebook Marketplace or Craig's List. Yes you will get those who are looking to buy cheap and then sell at pandemic prices but if you are patient, you will most likely get a die-hard Bears fan who would make you a reasonable offer. Just don't get caught up in the pandemic price craze thinking you can get those top dollars especially if looking to move all at once.
Myself, if they were mine, I would rather see a true collector and fan get them than any "investor".
Bruno
--------
Check my Profile page to see my 2023 Goals and my Lists of sets near completion (5 cards or less) or sets getting close (less than 100 cards missing and 75% complete).
https://www.tcdb.com/Forum.cfm/Page/B/ID/0/?MODE=VIEW&ThreadID=25745&C=0