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THE SILENT CURTAS MYSTERY
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Landcrab



Joined: 25 Apr 2022
Posts: 3
Location: Vancouver, BC, Canada

PostPosted: Mon Nov 28, 2022 4:39 am    Post subject: Reply with quote

A little late to the conversation, but I haven't had this Curta for long!

5004913: Hole - yes, Spring, no.
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Landcrab



Joined: 25 Apr 2022
Posts: 3
Location: Vancouver, BC, Canada

PostPosted: Thu Jan 26, 2023 1:53 am    Post subject: Reply with quote

Not sure why I find this so fascinating but I found one on ebay with the spring: 506761

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Pete42



Joined: 23 Sep 2022
Posts: 28

PostPosted: Mon Feb 06, 2023 12:31 pm    Post subject: Reply with quote

My Curtas in the interesting range are:

37338 - hole, no spring
37339 - hole, no spring

510525 - hole, no spring

All the best,

Pete.
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Graham Nash



Joined: 30 Sep 2011
Posts: 22
Location: Australia

PostPosted: Tue Feb 07, 2023 10:22 am    Post subject: silent curta Reply with quote

I had one, a very tidy early type 2 number 507441. I was slightly confused about the spring as it was floating around loose inside the machine. I ended up selling it on ebay, although I must admit I can't recall what happened to the spring.
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Lost on the far side of the world, where Curtas are seldom seen.
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Pete42



Joined: 23 Sep 2022
Posts: 28

PostPosted: Fri Sep 22, 2023 6:59 am    Post subject: Reply with quote

Hi Romano,

Some more data points for you:

57058: No Hole (you know that one)

526879: No Hole
533801: No Hole

The others are currently abroad :-)

All the best,

Peter.
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opensourcefan



Joined: 19 Aug 2023
Posts: 18
Location: Canada

PostPosted: Sat Dec 30, 2023 6:07 pm    Post subject: Reply with quote

The quietness of my new to me type 2 was a surprise compared to my type 1. I'd bet it has the spring in use. I'll confirm when I'm able and report back.
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I have mechanical, machining and engineering experience. I need to play with the insides of these wonders.

Type I (1969), Type II (1956)
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