131.019 dial - proper hour marks or not, pointy vs flat?

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I am trying to get my hands on a 131.019, and learning the dial.

It seems there are many dials on this one, but all of them have pointy hour marks.

However a few don't.

Which is genuine or are they both? Thanks.

Flat:

Pointy:
 
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Both genuine. Lots of variation in dials at this time.
Thanks.

Also, is it normal for a dial to be golden while the watch is steel/not gold plated?
Edited:
 
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Thanks a lot. Any help learning to tell Omega vintage watches apart is much appreciated.
 
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The best way to learn is to narrow down your preference to a couple of references and read as much as you can on those refs on this forum