Are these chain rings toast?

[averagebiker]

Just rooting around the stockpile of parts for a nicer crank to put on my Dawes Galaxy.
This is the one I was looking for (Ofmega Vantage triple) that I was given many years ago.
However looking at the chain rings (big and middle) there is either a section of "specially shaped" teeth opposite each other or these are areas of wear and the rings need replacing.
What does the retrobike massive think?
Cheers

 

[KermitGKona88]

They look fine to me, looks like shifting ramps.

 

[averagebiker]

Great news, I will give them a proper clean tonight and fit them tomorrow

 

[grantoury]

they're not new, but will work fine

 

[Midlife]

Is it this one (as a triple).

https://velobase.com/ViewComponent.aspx?ID=c2182a8c-60a1-4d89-80dd-c4df555de8f6&Enum=115

 

[averagebiker]

Is it this one (as a triple).

https://velobase.com/ViewComponent.aspx?ID=c2182a8c-60a1-4d89-80dd-c4df555de8f6&Enum=115

Well not the same colour and a triple, but it is the same model. Maybe a different year?The granny ring is a Tioga ring so likely a replacement.

 

[Midlife]

I was just doing some googling to see if the Ofmega chainsets had some firm of shifting ramps.....

 

[averagebiker]

Cheers. That is the same thing I did and it doesn't look like they did (hence this thread). But there is no guarantee the rings are original? I may just fit them and see how they work out.