part number 50000320

I have an EPC/CON-16 RJ45 that is not working. I am looking for a replacement but I have a problem. The serial # is V 808 52469 and the part number on it is 50000320
When I look for that part number it is not found. When I look up the serial number it give 76000059 as the part number is this the correct part number?