CV CU ? Silver mark

Discussion in 'Silver' started by terry5732, Apr 16, 2018.

  1. terry5732

    terry5732 Well-Known Member

    Tests sterling. No other marks.
    cu 001.JPG cu 002.JPG cu 003.JPG
     
  2. say_it_slowly

    say_it_slowly The worst prison is a closed heart

  3. terry5732

    terry5732 Well-Known Member

    I found them taking out a loan to get into flatware but nothing of them after that

    I don't think they were around long enough to change their logo

    A very 1910ish pattern though
     
    judy likes this.
  4. Noblechuck

    Noblechuck New Member

    Hi Terry,
    Have you discovered anything further concerning this pattern? I came across a small set of knives, forks and spoons.
    Thanks,
    Chuck
     
  5. terry5732

    terry5732 Well-Known Member

  6. Noblechuck

    Noblechuck New Member

    The knives have a larger CV/CU on the blade and more ornate with outlined lettering. I'll post a pic when I can. The flatware polished up incredibly nice. Wish I had further clues to offer. Regardless, it's a nice set. Your 100% confident it's sterling? I don't have acids to test, but everything else about it agrees with your testing.

    Thanks for you reply and contribution.
     
  7. Jeff Drum

    Jeff Drum Well-Known Member

    Doesn't really scream sterling to me. Acid test not reliable unless you make a large disfiguring scratch, thereby spoiling the item. I recommend a specific gravity test, which you can do if you have a good scale and a bucket of water.
     
  8. Noblechuck

    Noblechuck New Member

    Jeff,
    Thank you for your valuable suggestion. I do have a very good scale, watched a quick video on specific gravity testing and this is what I came up with.

    Testing 3 different pieces

    Teaspoon weighing 21.1g, tested at 2.4g which equals 8.79
    Tablespoon weighing 37.6g, tested at 4.4g which equals 8.54
    Dinner Fork weighing 30.6g, tested at 3.5g which equals 8.74

    My understanding (could be wrong) is that pure silver would result at 10.49 or thereabouts?

    Chuck
     
  9. Jeff Drum

    Jeff Drum Well-Known Member

    Hard for me to know since I dont know what technique you used or how you did the math, but if your website was reliable and showed how to do the math then that should be right.

    And those values do suggest “German silver” or similar tin/copper based alloy. I always test a known piece of sterling and silver-plate along with the pieces I need to test. That way I can be sure I’m not screwing up somehow. There are other tables of specific gravity online, this one shows German silver at 8.58 and pure silver at 10.5 (the spec gravity of sterling and other non-100 percent mixes will be somewhat lower than 10.5 due to the mixed in copper etc but still higher than 10). https://www.engineeringtoolbox.com/specific-gravity-solids-metals-d_293.html
     
    Last edited: Jan 4, 2019
  10. Noblechuck

    Noblechuck New Member

    I should have added that I also did test a known sterling silver teaspoon (like you I wanted to make sure my testing was fairly accurate) and that piece tested out at 10.3-10.4 as I recall. Thank you so much for your input, I'm certain to put this newly learned technique to use again.
     
    Jeff Drum likes this.
  11. Keith Fadely

    Keith Fadely New Member

    I found several pieces of this same pattern cutlery in an antique shop this afternoon. Should I go back and buy it? Being sold for $1.00 per piece!
     
  12. Rebecca Pokela

    Rebecca Pokela New Member

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