I assume these threads will get combined, but in the meantime, here is my answer from your other thread.
Quote:
This is outside my usual era, so take this with a grain of salt, but I believe you have the decimal overprint on Pitcairn 39. You can see the 1/2d under the anchor, which was done as an attempt at obliterating the old value using some visual interest. The decimal 1/2c was added.
This now makes it Scott 72.