I don´t think is a Eta clone.. balance wheel is completly different... and in other possition.
Starking asures is is own movement.... even on their web... they call it 1813 caliber...
They have even a PDF with the drawing of it.
I think is a simple DG2813 who Starking has change escapement regulator to increasse alternances per hour...
Anyways.. I have buyed one Starking watch... Soo When I have it here I promise many photos as you want... :P