It looks like a grease-filled die issue on the obverse. Grease gets into the recesses of the die (highest points on the coin) and that can cause certain devices/letters/numbers to appear weakly struck on the coin.
Zabeth II... I kinda like that.
Tantum religio potuit suadere malorum. -Lucretius
"Just because you're paranoid don't mean they're not after you." -Kurdt Kobain
Grease filled die errors are very common World wide, with circulating coinages produced in the trillions. These sorts of error coins are never checked to be removed, before being released into circulation. There are just too many of them, and they still serve perfectly well as circulating coins.
Nevertheless, still scarce enough to be considered as a 'keeper', by most collectors.