1980-1989 501 jeans XX has become a model 501 0000 0000 as a code number instead of XX and xx have been back to the x-501 black printing is almost half of 2 numbers, then it has become a large 501 print red.
1980 - 1989 501 XX jeans have become the model number 0000 501 0000 XX and the code is returned to the black print 501 xx x 2 to be small, nearly half of that number. Then became 501 large red print.
1980 - 1989 jeans 501 XX became the model 501 0000 0000 number is the code for the XX and returned to a 501 XX print black. The x 2. Be small, almost half of the numbers and have become 501 big print red.