How can I get this aerator out?

[Sebwithweirdaerator]

I want to install a faucet diverter, but this aerator does not seem like one of the usuall ones. Does anybody know how to get it out? I took a photo Bildschirm-foto-2023-02-08-um-19-54-25 hosted at ImgBB - https://ibb.co/Tmd84xt

 

[gmartine]

Looks gummed up but it should unscrew like every other, how you get some purchase is another matter as it doesn't look to have any flats for a spanner or has anything raised to grab.

Perhaps jam some partially opened nose pliers into it from underneath?