Its Nice that PCGS has put out a date line for their holders. I see it still needs more work but I like it. Many sub types are missing.
It appears to be a Gen 4.3 holder. Our cert numbers are random, so I don't understand your comment that the cert number is too low.
1.1 is on white, unribbed paper, made in mid Feb 1986. 1.2 is on light green, ribbed paper and was made from late Feb 1986 through early Sept 1989. Many of the 1.2 inserts have faded over the years, and appear almost white today. The were originally pale green.