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Richard Polt got the User-Manual up on his web site.
It is in the S-section for "Scheidegger Princess-Matic".
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Looks like not all Scheideggers wore a beige suit: Vintage Princess 300 Typewriter by Keller U. Knappich (West Germany) - R26 | eBay
I'm guessing those key caps pop right off and you've got a classic Princess 300 with the usual branding and color scheme (with an original Scheidegger warrantee card).
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Rob,
I found this photo in the TWDB galleries when I was on the hunt for my machine.
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The risk of buying this one on eBay...one does not know if the layout is QWERTY or another...
As Clint Eastwood would say... " Do you feel lucky, punk ? "
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Ha! Good Dirty Harry reference.
I would love to find a set of the keycaps and the typing instruction manual.
I'm pretty sure the one I linked to would be QWERTY given that the warrantee is out of the London office. I'm a little tempted, but I'm trying not to get duplicate machines.
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Well the 300 on eBay UK went hammer down for $ 65 USD and another $ 70 in shipping if the buyer was in the USA.
Compared to the asking prices on eBay for other 300's, this seemed to be a decent price.
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Found this photo of another Princess-Matic with a type of name-plate on the ribbon cover that is not a water-slide decal.
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Here is the R. Messenger web site where I found the photo. Lots and lots of great info. about the Scheidegger School and the various typewriters used for the program.
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And more here from an earlier blog posting by R. Messenger :
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Thanks Pet. Reading the comments on the earlier piece was almost as interesting as the article itself, with so many commenters who either attended or were employed by Scheidegger schools.