BillyBlog Plays 52-Card Pickup (Moo)

I found these cards, from two separate, yet related, decks, on November 1st near the corner of Ft. Hamilton Parkway and 86th Street in Brooklyn. I'm not sure what the letters on the backs of the card mean. Could they be Greek (Mu, Omicron, Omicron)? Or Russian? I don't know. I guess it'll just have to remain a moostery.

The following cards have been found previously:

The King of Spades (October 26, 2008)

The Ace of Spades (September 22, 2008)

The Jack of Diamonds (September 18, 2008)

The Six of Hearts, Queen of Hearts, and Eight of Clubs (August 10, 2008)

The Six of Clubs (July 21, 2008)

The Seven of Hearts and The King of Diamonds (April 24, 2008)

The Three of Clubs (March 29, 2008)

The King of Hearts
and the Three of Spades.
(February 28 and March 25, 2008)

The Ace of Diamonds
(July 7, 2008)

The Jack of Hearts and Five of Hearts
(July 19, 2008)

View the whole set here.

And here's the scorecard with the latest additions:

Hearts: 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K, Ace
Diamonds: 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K, Ace
Clubs: 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K, Ace
Spades: 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K, Ace