Oldest commercially produced baseball card?

[Baseball Rarities]

The 1869 Cincinnati CDV and trade cards has always been one of my favorite "cards" in the hobby. I have images of a few ads from contemporary magazines that show the following addresses for Peck & Snyder:

1865-1868: 105 Nassau St.
1869: 22 Ann St.
1870 on: 126 Nassau St.

Here are my thoughts:

CDV's that have either Peck and Snyder (22 Ann St.) or Chadwick's Base Ball Book of Reference ads on the back come from the season of 1869.

The Peck and Snyder trade cards with the ice skating on back (22 Ann St.) come from winter of 1869.

The Peck and Snyder trade cards with all other advertising and 126 Nassau St. on the back come from 1870-71.

CDV's pre-dated trade cards and were obviously much easier and cheaper to produce. I think that the success of the initial run of CDV's with advertising on the backs in 1869 led to the production of the trade cards in 1870 and 1871. No doubt additional generic CDV's were printed after 1869 as well.