WTTF 76-79 Topps cards
 

See if you can tell what these all (with one exception) have in common.

I would be willing to trade for pretty much any unmarked checklists in nice shape from 1976-1980, but need these in particular.

1976 Topps third set (02/22/20) (at least NrMt – this is a nice set, unmarked CL)

504 Pirates, 531 Mets, 643 Checklist

1977 Topps second set (Ex-ExMt or better, no creases, unmarked CL)

183 Cardinals 287 Reds

1977 Topps third set (ExMt/NrMt or better, this is a nice set, unmarked CL)

287 Reds 388 Harmon 546 Orioles

1978 Topps third set (ExMt-NrMt or better, unmarked CL)

526 Reds, 577 A’s

Thank you
Ted

Also if anyone's looking to buy cards from 76-83 Topps, except the major rookies and unmarked checklists, let me know.