1675 GMT insert aging, natural?

befobe · Jun 29, 2025

Hi OF,
Fond of Omega, I also love GMTs...
So, always keeping an eye on redback inserts for 1675, and I would like your opinions about this one.
I don't contest the Rolex provenance, late 70's.
What is strange to me is the aging of the red area. Especially the close views I made.
How can this happen naturally?...

Happy to hear from you, Omega&Rolex guys!
B.

josiahg52 · Jun 29, 2025

Fading is most certainly normal for anodized parts subject to UV light exposure. Red is very susceptible, blue can fade also. It depends on the dyes used. There is overlap between the two colors and the shade is slightly different there.

Aditor · Aug 25, 2025

befobe
Hi OF,
Fond of Omega, I also love GMTs...
So, always keeping an eye on redback inserts for 1675, and I would like your opinions about this one.
I don't contest the Rolex provenance, late 70's.
What is strange to me is the aging of the red area. Especially the close views I made.
How can this happen naturally?...

Happy to hear from you, Omega&Rolex guys!
B.

In my opinion, it's a natural degradation. Artificially made inserts always have areas where you can identify either the acid or the brush that created the color change. Here you can see the color change of the pigments. In my opinion, those areas that remained redder could have arisen from the heavier masking during the pad printing of the blue before anodizing. But I've never seen it in other inserts. That said, I don't think it's abnormal. If they had separated the two colors with tape during the artificial color change, it would, in my opinion, be a more defined cut.

befobe · Aug 26, 2025

I see, and I appreciate your explanation. That's a unique insert.... (Too expensive for me but really attractive....)

Aditor · Aug 26, 2025

befobe
I see, and I appreciate your explanation. That's a unique insert.... (Too expensive for me but really attractive....)

i understand!!

southtexas · Sep 6, 2025

It can help to see the back. But I had one from the same era that was very similar to that fade, and it was natural.

1675 GMT insert aging, natural?

befobe

josiahg52

Aditor

befobe

Aditor

southtexas

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