Vintage Gruen: The caliber database

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The caliber 440 [message #670]

Sat, 15 June 2013 16:01

JackW
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Registered: May 2013
Location: Denver

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The caliber 440 is 17 jewels and is 8-3/4 x 9-3/4 ligne or 19.4mm x22mm. It is the third Curvex movement that was produced by Gruen and shares parts with the caliber 430 and 435. This caliber is clearly marked with the number in the space between the barrel bridge and the balance cock.
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http://vintagegruen.org/vgforum/index.php?t=getfile&id=336&private=0

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The caliber 440

By: JackW on Sat, 15 June 2013 16:01

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