Nettles black loop
![](https://img.comc.com/i/Baseball/1969/Topps---Base/991/1969-Rookie-Stars---Danny-Morris-Graig-Nettles-(Black-Loop-Above-Twins).jpg?id=3d063c52-dd59-4a5e-a3fd-c8d55b853c32&size=original)
1969 Topps - [Base] #99.1 - 1969 Rookie Stars - Danny Morris, Graig Nettles (Black Loop Above Twins) [Good to VG‑EX]
Courtesy of COMC.com
1969 White Letters (group), including Rookie Stars and Mantle
Various checklist errors in the 60s: 1967 Tom/Dick Kelley, 1966 #101 Spahn/Henry, 1969 #107 Jim/John Purdin. Due to cards being printed in multiple series.
1983 Fleer fingers on back; weird printing error
![](https://img.comc.com/i/Baseball/1981/Fleer---Base/1262/Ron-Cey-(Finger-on-Back).jpg?id=46482888-f6da-44c7-951f-2e86ba2371b7&size=original&side=back)
1981 Fleer - [Base] #126.2 - Ron Cey (Finger on Back)
Courtesy of COMC.com
Skip-numbering: considered an error? Made collectors think they were missing cards in the set to buy more packs intentionally, including some famous short prints.
![](https://img.comc.com/i/Baseball/1982/Fleer---Base/6031/Lee-Smith-(Upside-Down-Cubs-Logo-on-Back).jpg?id=aa7ce3d3-05bc-4c6f-b9af-508fb6e32c9a&size=original&side=back)
1982 Fleer - [Base] #603.1 - Lee Smith (Upside Down Cubs Logo on Back)
Courtesy of COMC.com