[Leon]

Nice research, Kevin..

]QUOTE=Baseball Rarities;2461645]I agree with Jeff. Besides the SL team postcard, the earliest postmark that I have ever seen on a "card" picturing Ty Cobb is from October, 1907. Here are a few more specific notes that I have regarding some of Ty Cobb's earliest "cards."

Please let me know if anyone has images of any earlier postmarks.

Sporting Life Team Postcard - I have images of 12 postcards from this set with 1907 postmarks. The earliest is April 12, 1907

Detroit Seamless Postcard - of the eight Cobbs that I am awae of, seven are postmarked - four on October 4, 1907, one on October 5 and one on October 7

Wolverine Postcard - the earliest postmark from this set that I can find is October 9, 1907.

AC Dietsche Postcard - the earliest postmark from this set that I can find is October 9, 1907. For some reason, only a small percentage of postcards from this set are found cancelled. Jim Chapman has done some great research on this issue and I think that he found an October 1, 1907 newspaper ad that announced the upcoming set.

HM Taylor Postcard - the earliest postmark from this set that I can find is October 7, 1907.

W600 Sporting Life Postcard - first offered to the public in the October 19, 1907 issue of the Sporting Life.[/QUOTE]