A well documented Curta



Today I got this Curta Type II with a LOT of documents...
Some of them are new for me and will be published soon.

The list:
- Kleine Zusammenstellung ueber Statistik
- Programme fuer die Berechnung von Wurzeln, Polynomen und Potenzreihen
- Klotoidenberechnung und Massenermittlungen mit der Curta-Rechenmaschine
- Curta Tabelle - Table (Contina)
- Contina bill and envelope
- Staffelwalze (Step drum) - study
- Quadratwurzel nach Toepler
- Quadratwurzel - notes about square roots
- Ein rekursives Verfahren zur Naeherung des Kreisumfangs
- Das Bestimmen von Naeherungsbruechen mit Hilfe der Curta-Rechenmaschine
- Vom Einsatz der Curta-Rechenmaschine im Mathematikunterricht eines Lehrerseminars
... and more

It would be great if you could post some of your rare and unusual documents!

Wow, impressive. Where did you find that stash?

I got a private offer locally...




... a first scanned item - a folding envelope by Contina

It’s interesting to see that Contina were still repairing Curtas as late as April 1972. I wonder how long that continued.

I calculate that with a 1972 exchange rate of about 10 Swiss Francs to the pound Sterling, and inflation of somewhat more than a factor of 10, at today’s prices the repair cost about £50 - very reasonable!