Flowering in November?? Can you help me ID?

[Cathpot]

This plant has reliably flowered in November for years now. It came with the house so every winter I am mildly surprised by it but have never known what it is. A friend admired it the other day and I would like to try and get her one. Can anyone help ID it for me?

The leaves look like chrysanthemum.

I think @Gatekeeper is right and they are Chrysanthemum 'Clara Curtis', which are late flowering.

https://hillclosegardens.com/catalogue/

Have a look here

Thank you so much!