Mainspring orientation

[SiZi]

I am working on my third restoration project, so forgive me for my silly question… but do you think this PUW 1461 mainspring might not be the typical orientation and instead the other way round? So instead of curling up counter clockwise from the outside to inside, does it seem like this one curls up clockwise from the outside to inside? The reason I suspect this is because of the way the hook is positioned on the barrel arbour. See video below - this is the lid, by the way… thank you for your help! 

 

 

[rjenkinsgb]

The shape of the arbour looks like that would turn clockwise (looking at it from the outside of the barrel) to wind the spring.

So yes, it looks to me like the spring fits in the barrel clockwise starting at the outside.

 

[mbwatch]

The Seiko restoration guy Spencer Klein has a neat mnemonic. Instead of confusing clockwise/counter that requires further clarification from the barrel wall or arbor, he uses the term "tsunami" or "anti-tsunami", as in whether the spring looks like the Great Wave or the opposite where it curls around the arbor. (as that's the image on a lot of Seiko dive casebacks)

A lot of Japanese and Roskopf type movements are "tsunami" while most Swiss are "anti-tsunami". Make a note of which it is every time you open a mainspring barrel lid.

[nickelsilver]

In a normal (not 8 day) watch, the barrel cover is usually on the bottom or dial side. In this configuration, the spring as viewed in the barrel will wind counter-clockwise from the arbor. If the lid is on top, the orientation as viewed is reversed. As this is the lid, the spring will go in to wind clockwise from the arbor, as it actually will once you put the lid-arbor combo in place.

[SiZi]

Thank you everyone for confirming my suspicion! And yes, I will be more careful to inspect the orientation when I open the lid, next time. Your help is much appreciated, as always!