There are several differences from the common F192, but the easiest to spot are:
Centre prong of trident below a border tooth, not touching it
Shield closer to Britannia (so further from edge of coin and more sea showing)
Britannia's thumb higher up the George Cross
The lower edge of Britannia's outstretched arm curves upwards (instead of downwards) from her body
This is a penny I found amongst many old slot machine coins I searched, so not something I have paid for (well one penny, I suppose). I'm posting to ask whether others believe it's really as rare as Freeman states? Any comments or comparative info much appreciated.
F192 on the left, F192A on the right.