Check the listing for details. 1969 1st Lunar Landing AC Spark Plug Space Age Explorers KeyChain, original case. Condition: Used, Made in United States. Listed at 29.90 USD. This AC Spark Plug KeyChain is a perfect addition for any space enthusiast's collection. With its unique design featuring the first lunar landing, this keychain is a true piece of history. Made of durable metal, it measures 2 1/8 inches across and comes with its original case. The keychain is a commemorative lunar landing and AC Transportation Medallion and was produced in the United States in 1969 or1970. It is not signed, but it does represent the incredible advancements in space exploration during that time. Perfect for anyone interested in astronauts and space travel, this keychain is a great way to show your love for the subject. This belonged to a family member who was in the automative industry, and this was probably a gift to him from AC.