Rolex Prince - different between 971, 1490, 1343?

[spawninc]

I m new to the Rolex Prince but really obsessed with it. i have googled but not much info i can find out on the internet.

I know that the 971 / 1490 are using brancard case, while 1343 is classic rectangular.

Are all 3 models using the same movements? What is the different between 971 and 1490?

[spawninc]

no one has any clues?

[MILGAUSS88]

Yes, use the same movement.
I think the dial design is a little different between the 971 and 1490, around the second dial.

[MILGAUSS88]

Same movement as the Gruen Doctor's or Duo-dials, if you are not aware.
Rolex sent the movements to the USA to be cased by Gruen, to avoid paying the very high taxes on gold at the time.

[MILGAUSS88]

Here is a comparison.

[spawninc]

I read about the Gruen's doctor watch but didn't know they are using the same movement. The tax avoidance part is interesting.