Possibilities ?
These two T206's (Herzog and Lake) do 
NOT appear in either the 
PSA or 
SGC pop reports, so are they "unique" ?



..
 
This T206 Jennings is not in the 
PSA pop report. It's the only one listed in the 
SGC pop report.....therefore, is it "unique" ?

..
 
Hey guys, I know better than to claim that these three above T206's are "One Of A Kind".....but, until other examples surface, I like the sound of that.
OK, now for the cards in my collection that I think are "unique"...........
1904 Buffalo Bills Team card ...... I've had this beauty for 24 years and have not seen another one.
 T205 Collins
T205 Collins

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 1949 LEAF Billy Johnson / Mizell Platt (
1949 LEAF Billy Johnson / Mizell Platt ( drunk printer on the midnite shift
 drunk printer on the midnite shift  )
)
 1969 Mickey Mantle color printing error (blue instead of gray)
1969 Mickey Mantle color printing error (blue instead of gray) ...... I've had this card since the 1980's and have not seen another one like it.
 
T-Rex TED