Frackville,PA & Muskogee, OK. Signs 2 and 3 used originally followed by sign 8, all three of which were still seen in 1975 but not for long afterwards. Sign 10 appeared in about 1971, and continued until about 1983, ofter with a small circle undernerath in varios positions like sign 9. A single Z also sometimes appeared with a circle underneath. Signs 4 and 6 were first used in 1983 and lasted until the early 2000s. Signs 5 and 7 were used during the 1990s on various microbrew bottles. A ZA sign appeared in about 2002, and sign was used on crowns of Mexican origin after that.