Oh, the misery of female spring bars is real...

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This issue is quite common on these pieces. In the old days, they made female spring-bars with flanged ends. Unfortunately, I don't have any. They look like this

https://www.ebay.com/itm/FEMALE-SPR...ge-Watches-16mm18mm19mm20mm-NOS-/192873003722

s-l1600.jpg
I just bought a pair of these. We’ll see how they turn out.
 
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The ones I linked have a 1.2mm I.D. unfortunately.
My (made in China) calipers may not be all that accurate...
 
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And yet you comment - multiple times - as though you know lugs were originally fixed, hence my curiosity.
It's an Occam's Razor thing. Why would someone purposely use a back-assword method of strap retention when people had been successfully using the usual soring bar for decades? My only reasonable explanation was that it was originally fixed-lug and someone cut it so they could more easily attach a strap... and trust me, I've had such thoughts mysellf at times! I have a wire lug "trench" that originally had a strap sewn on and believe me, finding something that looked similar enough was very difficult.

Believing this case came from the factory as you see it strains my credulity. But then, I've been wrong before, because some manufacturers in whatever field have come up with some wild designs in teh past....
 
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It's an Occam's Razor thing. Why would someone purposely use a back-assword method of strap retention when people had been successfully using the usual soring bar for decades? My only reasonable explanation was that it was originally fixed-lug and someone cut it so they could more easily attach a strap... and trust me, I've had such thoughts mysellf at times! I have a wire lug "trench" that originally had a strap sewn on and believe me, finding something that looked similar enough was very difficult.

Believing this case came from the factory as you see it strains my credulity. But then, I've been wrong before, because some manufacturers in whatever field have come up with some wild designs in teh past....

Tri was introduced in 44 for UGs 50th anniversary. They were not doing fixed bars this late. I have never seen a Tri with fixed bars and while there’s always the potential for an exception, I think we can say with near absolute certainty this case did not have fixed bars.
 
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It's an Occam's Razor thing.

In this case the principle of Occam's Razor would be "why would a company known for producing watches with stubs for female spring bars use fixed bars on a reference not known for it"

😀
 
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It's an Occam's Razor thing. Why would someone purposely use a back-assword method of strap retention when people had been successfully using the usual soring bar for decades? My only reasonable explanation was that it was originally fixed-lug and someone cut it so they could more easily attach a strap... and trust me, I've had such thoughts mysellf at times! I have a wire lug "trench" that originally had a strap sewn on and believe me, finding something that looked similar enough was very difficult.

Believing this case came from the factory as you see it strains my credulity. But then, I've been wrong before, because some manufacturers in whatever field have come up with some wild designs in teh past....

The male pins are original, and well-known to UG collectors.
 
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It's an Occam's Razor thing. Why would someone purposely use a back-assword method of strap retention when people had been successfully using the usual soring bar for decades? My only reasonable explanation was that it was originally fixed-lug and someone cut it so they could more easily attach a strap... and trust me, I've had such thoughts mysellf at times! I have a wire lug "trench" that originally had a strap sewn on and believe me, finding something that looked similar enough was very difficult.

Believing this case came from the factory as you see it strains my credulity. But then, I've been wrong before, because some manufacturers in whatever field have come up with some wild designs in teh past....

Sometimes it is a zebra. 👍
 
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Tri was introduced in 44 for UGs 50th anniversary. They were not doing fixed bars this late. I have never seen a Tri with fixed bars and while there’s always the potential for an exception, I think we can say with near absolute certainty this case did not have fixed bars.

Might have to disagree on that point my friend. I’ve been loathe to change the (lovely) strap that came with my 1940s rose gold 12266 for exactly that reason....fixed posts for female springbar as, as shown on these pics that came from the dealer when I first acquired it a few years ago. 😗
 
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Might have to disagree on that point my friend. I’ve been loathe to change the (lovely) strap that came with my 1940s rose gold 12266 for exactly that reason....fixed posts for female springbar as, as shown on these pics that came from the dealer when I first acquired it a few years ago. 😗

I think you may have misunderstood Ben's comment, since you are actually agreeing with him.
 
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I have only seen male lugs like that with precious metal cases, so my conclusion is that with the proper spring bars, this set up might be more secure than drilled lugs.

When I needed to change the strap on my Landeron Chronograph Suisse, I had to cut it off, as there was no tool that could get between the edge of the springbar and the case.
gatorcpa
 
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Might have to disagree on that point my friend. I’ve been loathe to change the (lovely) strap that came with my 1940s rose gold 12266 for exactly that reason....fixed posts for female springbar as, as shown on these pics that came from the dealer when I first acquired it a few years ago. 😗

Oh holy cow. That's a big flex...

I'm a bit embarrassed by my mucky example compared to this beauty contest winner. Very nice example, congrats.
 
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History lesson ... this configuration makes it possible to produce a lighter gold case. I have never seen fixed bars this late.
 
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Might have to disagree on that point my friend. I’ve been loathe to change the (lovely) strap that came with my 1940s rose gold 12266 for exactly that reason....fixed posts for female springbar as, as shown on these pics that came from the dealer when I first acquired it a few years ago. 😗
Sorry that I misread/misunderstood the reference to fixed springbars (as opposed to female springbars) in your comment - I would agree that I’ve never seen a fixed springbar Tri either.
 
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I think you may have misunderstood Ben's comment, since you are actually agreeing with him.
Yup. I sit corrected, as noted below! Thanks.
 
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Turns out these are 1mm internal diameter. I'll add them to my jar of useless female spring bars, along with the ones from Cousins!

The ones from Cas-Ker are the same - all 1mm ID.
Sadly I too have a box of useless female spring bars. I think you need to pick up the phone with these suppliers.