Recently got this little guy for a steal. It's an enamel faced Actina trench style watch I presume from the teens or early 20s. Love the look and it runs nicely so the balance is good luckily. My only problem is the lack of identification. No Swiss at 6, nothing on the case back in or out, and nothing on the movement. The movement looks to be of decent quality with some jewels but no maker and an odd bridge shape. Anyone know the movement or date for this guy?