Mainspring condition opinion?

[BeyondWorld]

Hi everyone, 

Sorry, I know this is a question that's asked alot, but would value your opinion of the state of this mainspring.

It's an old blue mainspring, unsure if there's still life in it, what do you guys think?

Is it tired or still acceptable to use again?

Thanks.

[Nucejoe]

If you can,t get a new replacement ( best option),  I guess the movement itself is a tool to measure the strength in. 

I instal and measure the running time. 

 

[rduckwor]

Its tired.  Needs to be retired.

 

RMD

[BeyondWorld]

Thanks, wasn't too sure.

[jdrichard]

It is SET. Need a new one

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[nickelsilver]

For a steel mainspring it doesn't look that bad. If a modern replacement is easily available definitely replace it but I bet it still works quite well.

[anilv]

Just curious, what movement is this? Reason I ask is that a lot of Russian movements have hairsprings which look like this, even when new.

Anilv

[nickelsilver]

Just curious, what movement is this? Reason I ask is that a lot of Russian movements have hairsprings which look like this, even when new.
Anilv

Most steel springs look like this, even new. If they open up bigger when band new then they look like this after one or two full windings.

[BeyondWorld]

1 hour ago, anilv said:

Just curious, what movement is this? Reason I ask is that a lot of Russian movements have hairsprings which look like this, even when new.

Anilv

12.68n longines

[Nucejoe]

Longines!          I replace with the best while supplies last.

[anilv]

18 hours ago, BeyondWorld said:

12.68n longines

I just got hold of a Longines with the cal.12!

Anilv