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8128 - The "perfect" Curta

 
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ricky



Joined: 17 Jan 2017
Posts: 8
Location: Devon, UK

PostPosted: Wed Jan 18, 2017 9:05 am    Post subject: 8128 - The "perfect" Curta Reply with quote

8128 is a perfect number. A "Perfect" number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128. If you are fascinated by numbers (you are, right?) then you might be interested in seeing the type 1 with serial number 8128.

I wonder where it is?

You can see an auction of it here from 2003 when it sold for $599/352:

http://www.christies.com/lotfinder/Lot/a-curta-calculator-type-i-4163896-details.aspx

All it said was "A Curta Calculator, Type I No. 8128, with eight slides, black finish and leather holder, in carton with instructions " with an image (lot 491)
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"CALL, O CURTA!"
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Sebastian



Joined: 11 May 2014
Posts: 38
Location: Germany

PostPosted: Thu Feb 02, 2017 6:54 pm    Post subject: Reply with quote

I've got a Curta which is close by: 8121

Regards

Sebastian
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Type I
5023
8121
11140
22146
22961
22983
26713
66561
80151
Type II
500438
502852
507157
509135
555001
555476
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