Continuing with this speculation, I recently bought a penny on Ebay advertised as a possible inverted V but which, on close inspection, had a very clear and sharp but thin bar to the A, especially when viewed at an angle. I was going to send it back because of this but then spent more time looking at it. In my view, the crossbar of the A is too clear and sharp for it to be the result of a partially filled die. In fact it reminded me of the residual date figures that have been overpunched, e.g F30 6 over 8 where the remains of the 8 are thin and sharp (see bottom picture). Could it be possible that someone set out to repair the A of VICTORIA on a working die (we know that specimens of F10 clearly show other attempts to repair the A - see right hand picture) on a die where the crossbar seemed to be strong enough for the repairer to use an inverted V punch to strengthen the legs, resulting in a thin residual crossbar ? The bar is hardly visible in the photo below but is clear and sharp at an angle under a magnifier and the left leg shows signs of repair (left hand picture).
I'll leave it others to comment.