Hello. Buying Eagle Ray GMT


Apprentice WIS
New to online forums of any kind. First timer also to buying a microbrand watch. Only I have been offered an Eagle Ray GMT in black that is new in the box. Price £600.
It is a stunning looking piece in the photos although I have never seen one in the metal..
What is putting me in doubt is reading that these were supplied with a mis-printed case back and a lack of paperwork or serial number ID . Could also be part of the charm I suppose, but what are the thoughts of other owners regarding this and QC on these watches please?
I have just taken delivery of a Limited Sinn104 with green dial. Fantastic personal experience dealing direct with Sinn and quite astonishing value. I can find no fault at the price, if the Eagle Ray can get half way to matching the quality of the Sinn then I shall be happy paying for it.
All the best.