There are constant flaws to be found on all printings beyond those listed by the ACSC.
Of the ones shown so far, the white flaw lower right of crown is on a stamp with SG watermark 65 Crown over NSW (type 3) from the 1902 printing and the three large white flaws can be found on the type 2 Crown over NSW issues (I also have it on Type 3).
The chances of finding a constant flaw among a few hundred are slim, but possible!
Finches, I don't recall seeing information about the ink recipes used at the time.
In Basset Hull's 1913 publication, the notes of the Committee of the Royal Philatelic Society (p.305) state:
The shades of the One Penny are somewhat difficult to describe - they are obviously aniline pigments varying in intensity and tone from a rose-carmine (sometimes almost approaching crimson) to a bright vermilion-scarlet.
Jimjamtwo, I have reposted your pair below with the crown pearl flaws and one with the secondary flaws highlighted.
There are varying degrees of degradation of the pearl flaws which warrant further investigation but not all have constant form and secondary flaws.
Your example IS a constant type as evidenced by the presence of secondary flaws including missing left end of the long horizontal scroll left of the crown, correct missing shading patterns and shape of the cross on top of the crown.