1960's Omega Bracelet - Special trick to resize?

Have an Omega 1099 stainless steel bracelet with what looks like push pins to secure the removeable links, but I have so far been unable to press the pin out.

Not seeing anything like a screwhead, does anyone know if there is some special technique for removing this type of pin?



(Omega SM Cosmic, cal 601, if anyone is interested...)



Hope everyone is having a great weekend

My guess:
Just like in the 1116 and 1098 bracelet these are spring bars, so do not try to push them out!
You need to push them from both sides to squeeze the spring bar together and then it is getting fiddly ...
There was a thread about this, but I can not find it right now.
Maybe these help:
https://omegaforums.net/threads/how-to-remove-links-on-a-1116-bracelet.56610/
https://omegaforums.net/threads/advise-on-omega-1098-bracelet.104706/

Yup, spring bars. Push one side, twist apart, push the other side, also twist apart. There is usually enough slack in the bracelet to do that.

When the spring bars are really gunky, they can be stuck sometimes so you can’t press them down with a pin. An ultrasonic bath usually helps, or apparently a cycle in the dish washer, as I’ve learned here.

Thanks to all for the good suggestions. I will give this a try.