These Polerouter (and UG in general) dials are more or less identical within the small batches they seem to have been printed in.
The size of the batches seems to vary from reference to reference and we need more time to be more precise about it.
Because of this, the size of the "feet" (Serif) varies from reference to reference, as well as within the references.
With time (maybe a lot of time...) i would not be surprised if we are able to tell if a genuine dial has been swapped out for another genuine dial just by a case serial number (think of all the different Rolex crown styles, as an equivalent).
For instance these two - different levels of Serif, but both are genuine:
https://omegaforums.net/attachments/ecc891ec-cc4d-4b38-9948-9216513a3576-jpeg.699866/
https://omegaforums.net/attachments/capture0055-jpg.638168/
Hope this helps.
Click to expand...