hi there, here is my silver trench watch that i’ve had for a few years now. have always wanted to know more about it but cannot find any info. has been a bit of a struggle as the text on the dial has worn off over the years. i know it’s a long shot but if anyone knows anything about these marks it would be very interesting to hear from you. looks like it could’ve once said ‘swiss made’ under the sub second but who knows.