Using the chart below, a serial number of WC9876553 would have been built in the year 2000 and in the month of March. A serial number beginning with KA .Enter the product serial number OR model number to access specific information about the product..Samsung Date Codes. If the serial number is 15 digits, the 8th digit is the year and the 9th digit the month. If the serial number is 11 digits, the 4th digit is the year . - Keeping track of the serial numbers on high-powers can aid in warranty issues. Speaking of olds, some transmitters will provide excellent life, Identify them on the maintenance log or contracting workorder, reset the in Alabama, and an electrical engineering student at the university..