These cards were all done on letterpress. The effect on the card on the left is called blind embossing. No inks were used at all. The image was just pressed into the paper.
The one on the right was ran on the letterpress and die cut their too.
This Christmas card was printed on the letterpress and perforated. Once delivered the perforated cards could be punched out to be coasters!
Here is a nice one color business card done of Letterpress for MKweddingstory.
This card was also done on letterpress and is two colors on one side and one color on the other.