The difference is small but B letter looks different:
The similar issue is with Isle of Man 2002 and 2003 1p. I'm not sure if the AB version exists (no exist in Southall IOM coins catalogue) but a lot of users claim they have it (I guess they have AE and not AB). Recently, I found AB on swap, so I did swap to receive AB but instead I received AE. In addition, the letter E is a double minted so it's very similar to the letter B.
PS. And I guess your Gibraltar AE photo is good enough. You can add it as example.