Which 1680 dial do I have?

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Hello,

Years ago (before I knew better...) I purchased a Sub 1680, and at the time I was under the impression that what I had was a service dial (mainly due to the overall good condition and the lack of visible aging on the lume). As far as the lume goes, it glows under a UV light, but pretty much immediately fades when the light is removed, so if it is a relume, it's a fairly old one.

Anyway, after pouring over a fairly detailed thread on Rolex Forums, I'm starting to think that what I have is a MK1 dial, and I was hoping to get some second (or third, or fourth) opinions on it, as well as thoughts around the lume due to the lack of patina.

(Advance apologies if I'm covering anything obvious here, my Rolex knowledge is poor to say the least)
This is mine, and I've highlighted the details at appear to lean toward an MK1 dial. First, the top of the "L" in "ROLEX" is roughly centered below the hole in the bottom of the crown, and second, the "ƒ" starts roughly centered below the "M" in"SUBMARINER"


Mark 1 dial, L and ƒ match locations


Mark 2 dial, L is to the left of the crown, and ƒ is slightly right of M


Mark 3, L is to the left and ƒ is to the right


Service Dial A, L is to the left and ƒ is further right


Service Dial B, L is to the left and ƒ is to the right


Service Dial C, same as above, L to the left and ƒ to the right. Additionally, the "Superlative" text is tighter, with less spacing between letters than other dial types.



So, that's what I've got, (I'm sure I missed some less obvious details someone will point out) and I'm curious what others think. Hopefully I can stop debating myself on this one!
 
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Looks like a MK1 to me---which never had the caseback off and never saw the sun.
 
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I suppose that's an option. Perhaps it was previously owned by Night Man