Mexico 896a , C234a and ERROR

Mexico 896a, C234a and with ERROR, MNH. Michel Bl.1-2, 2 with error: image of the stamp 50c is shifted to the left. Centenary of the First Mexican Stamps, 1956. Aztec Designs: Motion, Bird, Flowers, Corn, Deer, Man; Ornament and masks, Archeological Era, Bell tower and Coach - Colonial Era, Jose Maria Morelos and cannon - herioc Mexico; Revolutionary, popular and modern Mexico.