u/ElectricalAd7430

I have 5+ full boxes of old sports cards. Mostly baseball, basketball and football from the ‘80s, ‘90s and 2000s. My grandparents owned a storage facility and found them in an abandoned unit. It is all unwrapped. There seem to be some potentially high value cards sprinkled throughout and I’m willing to spend some time to sort through it all but was curious to see what suggestions you all would have for how to approach this.