Correct insert for 1969 Red Sub 1680 Mark1 ¿?

[Rolessor82]

Hello everyone,

According to watchprosite.com the correct insert for a MF Mark1 1680 is a Mark2 "Long 5". However you rarely see it with dealers and on the internet.

Is this correct?

Below the original excerpt

[swaini3]

You may not see it as much as other inserts for Subs but not rarely.

[PVR]

You rarely see them because:

1. They have gotten replaced over the last 50 years.
2. Shrewd sellers pull them and sell them for 3-4000 alone.

[decisive]

As noted they got replaced over time.
In that era they’d be a long 5 or a standard mk2. In about 69/70 you start seeing the long 5 disappear.

[indianmachine]

Good article by Xeramic on inserts here:

https://www.tapatalk.com/groups/vint...r-t266367.html

[springer]

I've always considered the Long 5 correct for the Mark I meters first dials. Contrary to what some others have written or postulated the last few years, the long 5 was always considered the correct insert for these dials - at least based on my past couple decades of collecting.

[Rolessor82]

Thank you all for your cooperation and clarification!!

John (Springer) always a pleasure to read you. Thank you!