Many thanks Dave,
I can see in David Groom's book (Identification of British C20th Bronze Coin Varieties)there are 8 minor varieties of 1900 listed. Glad to hear that an additional minor variety has been recorded. I wonder is there any source with pictures of the 9 or whether anyone has collected all 9 ?
Best Regards
I am not greatly into this Grading Mularkey but I would say the NGC 65 is way over graded - far too much loss of detail on the bust. I would say the other two are very similar and I would choose your ungraded one over the PCGS 64.