How to Open Victorinox Caseback

[dnhb]

I'd be grateful to know how to go about opening the caseback of this watch which I've been asked to get going....

Edited August 29, 2024 by dnhb
Typo

[RichardHarris123]

Assuming it's a screw on, try the nut method.  Superglue a nut to it, use a spanner on the nut, drop the back in acetone to desolve the glue. 

[Nucejoe]

Looks be a two piece stem,  so likely to be a front loader.

Rgds

 

Edited August 29, 2024 by Nucejoe
correction

[mikepilk]

Probably not a screw back, have a read here 

 

[dnhb]

2 hours ago, mikepilk said:

 

Probably not a screw back, have a read here 

Your instincts are spot-on ! What added to the initial confusion in my mind was that somehow I'd managed to turn the caseback a little anti-clockwise with my 3-proged opener but couldn't achieve the necessary alignment again to turn it further. If I had though, I would still be turning it now as it was indeed a press fit - and I actually managed to secure it again after replacing the battery ! What a great forum people like you are maintaining. Many thanks !