Help needed: what movement is this? Panerai?

[rs1984]

Hello dear watch community,
can anyone help me with what kind of movement it is?

Thank you in advance

 

[kilowattore]

Known as 21j

 

[rs1984]

So it's not a seagull movement?

 

[rs1984]

I saw the movement on Facebook.
The movement is working but comes without a stem?

 

[Karbon74]

21j also known as 2813
A knockoff of the Miyota 8215 with sometimes some variants

Mass produced by various factories with very random quality.
Deffo not a Seagull

 

[rs1984]

Thank you very much,
I was not aware that there is also a version of the DG2813 with a small second at 9 o'clock

 

[Rx4Time]

Thank you very much,
I was not aware that there is also a version of the DG2813 with a small second at 9 o'clock

Here's but a small sampling of all the different variations of this movement from one of the watch parts supply houses

Chinese Made Mechanical Watch Movements