Help Identify this mark on a teapot

[Butterflywpg]

https://photos.app.goo.gl/qflAriNYNyo37Aug1

https://photos.app.goo.gl/bzEwttwVsXyaXqiQ2

[dognose]

Hi,

Welcome to the Forum.

Please embed your images as very few members will click on links.

Give some time to creating your post and we'll give some time to researching and answering them.

Trev.