1968 was also the year of the Prague Spring, the student riots in Paris France.
Mauritius gained independence from Britain, and Nauru declared independence from Australia.
On March 18th the US government ended the gold standard. Crown Prince Frederik of Denmark was born on May 26th, and Martin Luther King died on April 4th.
Link for more reading in 1968-
http://en.wikipedia.org/wiki/1968 History of Mexico 
For thousands of years, Mexico was a land of hunter-gatherers. Around 9,000 years ago, ancient Mexicans domesticated corn and initiated an agricultural revolution, leading to the formation of many complex civilizations. These civilizations revolved around cities with writing, monumental architecture, astronomical studies, mathematics, and militaries. After 4,000 years, these civilizations were destroyed with the arrival of the Spaniards in 1519. For three centuries, Mexico was colonized by Spain, during which time the majority of its indigenous population died off. Formal independence from Spain was recognized in 1821. A war with the United States ended with Mexico selling almost half of its territory in 1848 (the treaty of Guadalupe). France invaded Mexico in 1864 and ruled briefly until 1867. The Mexican Revolution would later result in the death of 10% of the nation's population.
Link:
http://en.wikipedia.org/wiki/Mexico
Aztec calendar
http://en.wikipedia.org/wiki/Aztec_calendar 
10 Centavos (1936-1946)
km#423 5 Centavos (1936-1942)
Year: 1968 Place: Mexico Event: Olympic Coin: Mexican 1968 Olympics Silver 25 Pesos Coin Edge
Incused lettering “Independencia y Libertad”
Artist
Ricardo Luna Y Vasco
Obverse: ESTADOS UNIDOS MEXICANOS On top of the coin 
Sculpture commemorating the moment when
Aztecs found the sign from the god
Huitzilopochtli. ( any Comments on this)?
The bird featured on the Mexican coat of arms is the
golden eagle. This bird is known in Spanish as
águila real (literally, "royal eagle"). In 1960, the Mexican
ornithologist Martín del Campo identified the eagle in the pre-Hispanic codex as the
northern caracara or "quebrantahuesos", a species common in Mexico (although the name "eagle" is taxonomically incorrect, as the caracara is in the
falcon family). Even so, the golden eagle is considered the Mexican eagle for official purposes, and for the same reason is considered the official bird of Mexico.
When Father Duran introduced the snake, it was originally an aquatic serpent. But in 1917, the serpent was portrayed as a
rattlesnake, because it was more common than the aquatic varieties in pre-Hispanic illustrations. As a result of this, the design and color of the snake on the modern coat of arms do not correspond with those of any species of snake, and were inspired by the representations of
Quetzalcoatl, a rattlesnake with
quetzal feathers. People liked to play with these birds because of their shiny feathers
Shows 25 Peoso
Mexican 1968 Olympics Silver 25 Pesos Coins
To commemorate the 19th Modern Olympic Games held in Mexico City in 1968, Mexico issued a very attractive 25 Peso coin in silver.
One Ounce Silver Bullion Coins
Mexico, like a number of other countries, issues a one ounce silver bullion coin, the Libertad.
Shows the amount of Silver in the coin and the Mint Mark: Mexico.
History on the Summer Olympic coins.
http://en.wikipedia.org/wiki/Summer_Olympic_coins REVERSE Artist
Lorenzo Rafael
JUEGOS DE LA XIX OLIMPIADA MEXICO 1968 around the top of coin.
Aztec dancer holding a ball
Link:
http://en.wikipedia.org/wiki/Aztec 
Olympic Rings Under dancer
Past Olympic Games since 1896 http://www.olympic.org/uk/games/index_uk.asp Mexican peso http://en.wikipedia.org/wiki/Mexican_peso
I used the Picture It! Photo Premiumto edited my photos and I posted links for more reading.
I photos saved in JPEG format, Camera used Olympus SP55OUZ. Lighting- Outside in the Sun.
Hybrid Mode
