852133 Santa Holiday Cards is a Seasonal set released in 2007. It includes a total of 20 cards and 20 envelopes.
The envelopes feature two different possible patterns. One depicts Santa Claus against a snowy backstroked, with a tree and presents. The second design features a large amount of Santa figures tumbling into each other.
This is a description taken from LEGO.com. Do not modify it.
Happy Holidays from LEGO' Santa!
A smiling LEGO minifigure Santa Claus wishes all your relatives and friends a happy holiday this season. Includes 10 each of 2 different greeting card styles and 20 envelopes.