Mr. Moody,

According to R.L. Wilson, the #3's were in later production in the same serial number range as #1's. I believe these to be the start of year numbers:

1973 130-50000
1974 130-51170
1975 130-54210
1976 130-55139
1977 130-60511
1978 130-65671
1979 130-70344

1980 on mixed with #1 numbers, which were:

1980 132-01360
1981 132-07159
1982 132-25986
1983 132-34077
1984 132-39043
1985 132-54434
1986 132-73032