See... You're pretty good at it.
The one on the right is my rep with the whole crystal double-ARed.
Tells when zoomed in seem to be:
- 6 and 9 markers are too wide
- rep lume is too white and glossy (since it is mostly white paint....), gen is slightly matte and ever so slightly yellowish-green (it may not be pure C1)
- rep insert numerals are whiter (also painted I guess), gen is slightly darker (platinum)
- the green of the rep gmt hand is darker, gen is brighter green, same for the green text on the dial
Here's some cropped pics
Gen
Rep