Style 5: R1742DWBF
See the Chart Below:
Note: This style consists of 9 characters, always beginning with a letter followed by 2 digits. The last 6 characters of the serial number can be comprised of any combination of letters and/or numbers.
Examples: F23456789 would be manufactured the 23rd week of 1991. C01D47415 would be manufactured the 1st week of 1988.