What breed of chicken is this?

[Melbrad]

I hatched this mystery chick who is now 13 weeks old. They were supposed to be all silkie chicks but this one is clearly not
Chat gbt says it is an old English bantam. The person who sold me the eggs said that she is probably a serama. The egg was the same colour and size as the silkies. So what is it? A serama or an old English bantam?

 

[Chocolate Silkie Queen]

Serama. If she breeds them I’d go with what she says unless she has OEB but I’ve never seen an OEB look like that before looks more like a Serama

 

[ChickenChick46]

It's beautiful! I would go with serama as well. Especially since the seller has those.

 

[JedJackson]

It looks like a mix to me. Doesn't seem small enough for a Serama. But I am not an expert on that breed.