I found reference to the Obak baseball cards in an issue of the United States Tobacco Journal from 1909.
|United States Tobacco Journal – October 9, 1909
from Google Books
I found several different advertisements from 1910 that featured the Obak brand, but I haven’t found one for the smokes featuring cards.
|San Francisco Chronicle – June 8, 1910
Here’s an example of the T212 Obak cards.
|Obak T212 – W. Hogan
from the Library of Congress
A nickel a pop? I’d buy them by the carton. And I don’t smoke.