Is this a 2813?

[Fandango]

Hi, I am trying to understand why this movement is listed as 2813 but has the date wheel in a different fashion (I am not sure it is connected to a gear in the center)

Can anyone clarify this?
Many thanks!

 

[Shiningdawn]

Maybe it is 2813-04, I saw this before

https://www.fywatchparts.com/product-page/chinese-dg2813rb-04-movement?currency=USD