Vintage Gruen Precision Curvex 330 Movement Is Actually A 311
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  1. #1
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    Vintage Gruen Precision Curvex 330 Movement Is Actually A 311

    Hi,
    I just acquired a vintage Gruen Curvex Precision model with a 330 movement. (Turned out to be a 311 movement). The size is an impressive 46mm long (lug to lug) by approx. 20mm wide. The Curvex case is marked 10k gold filled. I remember reading that these old Gruen watches were one of the first in a series of longer models, but when looking closely at the back cover, I noticed what appeared to be a portion of thumb nail tab that might have been removed. I was under the impression that the later models had a tab. Is there any way of telling if the movement might have been switched to a newer case? The overall condition of this watch seems excellent, but the rear case cover made me wonder. The marking on the back cover lip reads Gruen 10k gold filled. I look forward to your responses.
    Mike
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    Last edited by mr.mike; July 30th, 2013 at 23:28.

  2. #2
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    Re: Vintage Gruen Precision Curvex 330 Movement

    Very, very nice
    Crown may not be original
    GRUEN made without doubt the first 'curved' movement
    BUT NOT
    The longest (earliest) movements
    Look for Movado PolyPlan 1912 -1920
    47 mm on three planes
    Last edited by HOROLOGIST007; July 19th, 2013 at 21:37.
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    NEVER ARGUE WITH AN IDIOT. FIRST THEY WILL DRAG YOU DOWN TO THEIR LEVEL. THEN, THEY WILL BEAT YOU WITH EXPERIENCE.

    "Failure is not an option" - Gene Kranz
    "Owning a vintage watch is great, understanding where it sits in Horology is magnificent"
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    "By Teaching Others, We Teach Ourselves"
    Adam

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    Re: Vintage Gruen Precision Curvex 330 Movement

    Hi,
    Thank you for your response. I remember seeing a number of early Gruen models without the Gruen signed crown. It is of course very possible that they too were replacements, but I'm not sure about the case back. The overall condition of this watch is really quite nice for being at least 75 years old. Most of my collection consists of more modern watches, and thought I'd take a chance with this "old timer". Most of the gold filled watches I've seen, displayed wear on the high points. This case and original dial really looked pretty good. I was really impressed with the elegant look of the curved case, but the 330 curved 17 jewel movement was of particular interest. Thanks again for your input.
    Mike
    Last edited by mr.mike; July 19th, 2013 at 22:10.

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  5. #4
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    Re: Vintage Gruen Precision Curvex 330 Movement

    Its a LOVELY watch
    I am not a GRuen expert
    Hopefully Bazzab (who is)
    will enter this thread
    A
    NEVER ARGUE WITH AN IDIOT. FIRST THEY WILL DRAG YOU DOWN TO THEIR LEVEL. THEN, THEY WILL BEAT YOU WITH EXPERIENCE.

    "Failure is not an option" - Gene Kranz
    "Owning a vintage watch is great, understanding where it sits in Horology is magnificent"
    and
    "By Teaching Others, We Teach Ourselves"
    Adam

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    Re: Vintage Gruen Precision Curvex 330 Movement

    Thank you very much. I'm sure others will express opinions. I must admit, this watch appears to be quite small in comparison to my modern collection. Not sure if I'll ever wear it, but it looks great in my case.
    Mike

  7. #6
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    Re: Vintage Gruen Precision Curvex 330 Movement

    Quote Originally Posted by mr.mike View Post
    Thank you very much. I'm sure others will express opinions. I must admit, this watch appears to be quite small in comparison to my modern collection. Not sure if I'll ever wear it, but it looks great in my case.
    Mike
    "small" - LOL
    Its HUGE compared to most watches of that period and up to 50s
    I can post Rolex's half that size!
    wear and enjoy
    Adam
    NEVER ARGUE WITH AN IDIOT. FIRST THEY WILL DRAG YOU DOWN TO THEIR LEVEL. THEN, THEY WILL BEAT YOU WITH EXPERIENCE.

    "Failure is not an option" - Gene Kranz
    "Owning a vintage watch is great, understanding where it sits in Horology is magnificent"
    and
    "By Teaching Others, We Teach Ourselves"
    Adam

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    Re: Vintage Gruen Precision Curvex 330 Movement

    Thank you Adam,
    It really is an impressive vintage watch, with a very elegant look. Maybe I should move it away from my Navitimer.

  9. #8
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    Re: Vintage Gruen Precision Curvex 330 Movement

    Quote Originally Posted by mr.mike View Post
    Thank you Adam,
    It really is an impressive vintage watch, with a very elegant look. Maybe I should move it away from my Navitimer.
    Yes - agreed, but I think this may be earlier than your Navitimer?
    NEVER ARGUE WITH AN IDIOT. FIRST THEY WILL DRAG YOU DOWN TO THEIR LEVEL. THEN, THEY WILL BEAT YOU WITH EXPERIENCE.

    "Failure is not an option" - Gene Kranz
    "Owning a vintage watch is great, understanding where it sits in Horology is magnificent"
    and
    "By Teaching Others, We Teach Ourselves"
    Adam

  10. #9
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    Re: Vintage Gruen Precision Curvex 330 Movement

    It's about 65 years earlier than my Navitimer

  11. #10
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    Re: Vintage Gruen Precision Curvex 330 Movement

    Quote Originally Posted by mr.mike View Post
    It's about 65 years earlier than my Navitimer
    As I said!
    Whats 65 yrs in the study of Horolgy from say 1550??
    NEVER ARGUE WITH AN IDIOT. FIRST THEY WILL DRAG YOU DOWN TO THEIR LEVEL. THEN, THEY WILL BEAT YOU WITH EXPERIENCE.

    "Failure is not an option" - Gene Kranz
    "Owning a vintage watch is great, understanding where it sits in Horology is magnificent"
    and
    "By Teaching Others, We Teach Ourselves"
    Adam

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