Serial Numbers: 1114110408, 1119570408, 1142040205, 1143100207, 1147320306, 1147330306, 1157290307, 1159120306, 1200580409, 1200700409, 1215800307, 1245260307, 1251300402, 1269240205, 1312400308, 1320420307, 1322770202, 1339940208, 1346040309, 1376660402, 1403090305, 1519560303, 1519570303, 1537150408, 1544970308, 1545920407, 1552190306, 1644880406, 1649280409, 1701830307, 1718970304, 1736210308, 1771500312, 1793030407, 1794700312, 1812750311, 1850350301, 1852450310, 1868930404, 1869430308, 1891830306 & 1897480311. All lenses are clearly identified with a 10 digit serial number. The format of the serial number is described below: Example of serial number format for lens: 1230010212 The first digit denotes the particular manufacturing plant within the AMO facility at Anasco, Puerto Rico, where the product was manufactured. The first digit codes are: - 1 or 2: Silicone Plant - 3: Silicone Rework Plant - 4 or 5: Acrylic Plant - 6: Acrylic Rework Plant Digits two through six denote the sequence of numbers assigned to the lenses. The seven and eighth digit denote the year of manufacture. The ninth and tenth digit denote the month of manufacture. In the serial number example above, the serial number represents the 23001 lens produced in the Silicone plant in December 2002.