GMT 1675, service dials, three variations

[springer]

Below are three variations of the GMT 1675 service dials that I am aware of from my experience. All three dials look the same in appearance. Prior to these service dials, I believe that Mark V and possibly Mark IV dials were used as service dials based on the
number of late 1960s GMT that are found wearing these later dials.

The tritium dial and the early luminova dials are marked the same at the bottom of the dial - which reads SWISS T<25.

The super luminova dial is marked SWISS at the bottom.