Details on early 93150 bracelets

[J!m]

Hello vintage experts!

As some of you are probably aware, I am currently undertaking a restoration of a early white dial 1680. Yes, I committed to going white with the 3.9m serial and found a very nice correct Mk I dial for it that is on the way as I type this.

Anyway, moving along, I believe this era would have a very early 93150 bracelet. These have the solid links (with 93150 stamped on the last link)that are screw-adjustable but with a clasp very similar to the 9315 clasp with a smooth flip lock and the side adjustment holes are all in line. Also no "9315" (or 93150 for that matter)stamped on the blade of the clasp and no date code stamp either.

My question is to the deeper details. On these clasps, there was no date code, I'm reasonably certain of that, but also there was not a "pinch" in the side of the clasp body to keep the diver's extension tucked into the clasp, correct? The 9315 clasps tend to have a model number stamp, date code stamp and also this "pinch" detail on the side, at least as near as I can tell.

So the question is, can the experts/owners chime in with their wisdom and maybe some photos to confirm or correct me on these details? I want to get the correct bracelet for the watch, as I am taking great pain to get the other details correct on it as well.

Thanks in advance for any and all comments!

PS the correct end links would be good to confirm as well! I think these were 580's...