Description: Style 1: Fifteen (15) character Serial number (includes dash (-)), that begins with three (3) numerical digits followed by a letter and nine (9) numerical digits a dash (1) and ends with one (1) numerical digits.
The month of manufacture is the 4th letter digit.
The year of manufacture is the 5th & 6th numerical digits.
Description: Ten (10) character Serial number that begins with three (3) numerical digits followed by two (2) letter digits and ends with five (5) numerical digits. This style serial number was used during a transition period in April and Many 1980 only.
Month of manufacture is 4th letter digit of the serial number. (See chart below).
Year of manufacture is the5th letter digit of the serial number. (See chart below).
Style 3: 28193MT
Description: Seven (7) digit serial number that begins with five (5) numerical digits and ends with two (2) letter digits.
Month of manufacture is the 6th letter digit. (See Chart Below).
Year of manufacture is the 7th letter digit. (See Chart Below).
Style 4: 36284M83
Description: Eight digit (does not include space) serial number that begins with five (5) numerical digits followed by one (1) letter digit and ends with two (2) numerical digits.
Month of manufacture is 6th letter digit. (See chart below).
Year of manufacture is 7th & 8th numerical digits.
Style 5: 940128116
Description: Nine digit all numerical serial number.
Year of manufacture is 1st & 2nd numerical digits combined.
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