1970s Rolex Cellini Questions

[radish04]

Hello, this Cellini was handed down to me a while ago. It was purchased in the 1970s. I do not have any official papers for it.

I was told by my mother (it was her fathers) that there were only around 20 of these made.

I found some issues on the watch. The "Cellini" is at an angle - were these possibly hand stamped onto the dial, and this is a defect?

There is also no "swiss" on the dial, just on the clasp.

I found a similar watch here, but it has a different band and the "swiss" is on the dial.

I attached some images. Please let me know what you think. I do not know if this has ever been recased or redialed, but I would not think so.

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[radish04]

Anything, anyone? I tried to open the back, but failed a few times and I don't want to scratch anything.