What could this be? It is marked swiss made and professional. The movement is 198340xx. Case is 2998-62. Could it be original to this movement and case? It is glossy blueish grey.
Agree. Definitely not original to the movement & case (which align with the 2998-62). I want to say that's a 105.012 B1 no T dial. Folks? Nice pics, I can really see those concentric circles.