This is Mdina.
I don't think this particular surface-finish was used for too long - it's well post-Harris period, but one of the designs I personally find very attractive indeed. It only ever seems to be on very small items;- owls, mushrooms, tiny flattened round bottles and small, straight-sided perfume bottles.
I have 2 bits with Mdina script on them, it's a late-ish script. I have no idea what period they were produced, but they're not that common. (They're not rare or scarce, just less frequent.).