Wittnauer D11KAS1 Mainspring Barrel Troubles

[mattlikesvintagewatches]

Hello,

I'm having some issues with this recent restoration. I came across a new type of barrel I don't think I've seen before. It has this weird line going down the middle of it. And on top of that, I can't seem it get it to open. I think that it shouldn't be this hard and I think I'm doing it wrong. I really need help on this, I have no clue how to get it open. I also noticed that a little bit of water or something got into the mainspring barrel, because there was a little deep orange-ish rust right around the arbor and I think it creeped into the barrel. Could be why it wont come undone. Any help is appreciated.

Thank you.

Here's what it looks like: 

 

[clockboy]

Perhaps it’s a trick of the light but it looks like one of the barrels teeth is broken off or damaged. PS what is the caliber of the watch 

[Waggy]

This looks like a Seiko mainspring barrel, I am sure there are many you tube videos out there showing how to open those and I'm pretty sure it will be the same technique (see below about 7 mins in). @clockboy I see what you are saying, but agree it's hard to tell if its damage/dirt or a trick of the light.

 

[mattlikesvintagewatches]

6 hours ago, clockboy said:

Perhaps it’s a trick of the light but it looks like one of the barrels teeth is broken off or damaged. PS what is the caliber of the watch 

Yeah, I'm almost sure that that's my fault. Some of the teeth were probably damaged when I tried to open it. The finish has worn off on some and hence the light tricks. This is a Wittnauer movement. I thought that the caliber was the D11KAS1, because thats what it says on the mainspring barrel bridge. 

[mattlikesvintagewatches]

I got it open!

I used the video that Waggy sent. All I had to do was use a razor blade to pry it open. 

But with that out of the way, is this barrel still usable?

 

I only took pictures from this side because the other side does light tricks. I did my best to capture all of the teeth.