Help me understand this Trade Dollar

Discussion in 'US Coins Forum' started by ldhair, Jun 8, 2016.

Page 5 of 5
  1. rzage

    rzage What Goes Around Comes Around .

    What was it Vinnie Barbarino used to say . "I'm so confused". Doug , so a GE Reveal will do the same thing as a good florescent light ?
     
    rzage, Jun 16, 2016
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  3. Insider

    Insider Talent on loan from...

    Nope! Hate them for my purposes; but I did purchase several different florescent types to try including:

    1. Natural sunshine
    2. Daylight

    So, in my experience (40+ years after I tried florescent and other light sources)
    there is NO OTHER LIGHT SOURCE (Have not tried grading using candle light, Coleman lanterns, or flashlights as you claim to have done :facepalm: :jawdrop:I hope you were kidding :hilarious::hilarious::hilarious::happy:;)) that SHOWS loss of luster on a coin's surface better than florescent light.

    The PROOF for all to see is in my Post #77. I could spend a week posting ancients, foreign coins, gold, Morgan's, etc. showing the same results. I'm done :muted: posting about lighting.

    My next post in this thread should be about abrasions and scrapes and how they are defined/used in numismatics. I need to speak with some finalizers at TPGS's, PM a respected numismatist here ;) and do some research before I post again on this particular subject.
     
    Last edited: Jun 16, 2016
    Insider, Jun 16, 2016
    #82 + Quote Reply
  4. ldhair

    ldhair Clean Supporter

    Yes to all the above. Bulbs come in all types. The light is measured in Kelvin. K-5000, K-3000 and more than I can list.
    The images in post #77 are not of help. The white balance is way off in both images. You can't compare them and learn anything.
     
    ldhair, Jun 16, 2016
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  5. Insider

    Insider Talent on loan from...

    I agree with your comments 100%! :joyful:

    Many people I have worked with in the past are either colorblind or just plain stupid. :bucktooth: You can show them virtually anything and they are too ignorant to understand simple concepts. For example in post #77 there are two images of the same coin using different light sources. One image is basically the same color throughout while the other shows silver and gray tones. The different colors indicate parts of the coin with disturbed luster.

    A better example of this ignorance occurs when I show a non-collector an original, frosty, BU Peace dollar and a Polished AU at the same time. In virtually every case the :bucktooth: picks the polished coin as the most attractive and better coin!

    Uninformed collectors and ignorant non-collectors are my favorite challenge and thankfully there are members here such as yourself who help. :kiss:
     
    Insider, Jun 16, 2016
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  6. GDJMSP

    GDJMSP Numismatist Moderator

    No, it does a better job than one - (and it's not a "good fluorescent light", it's a fluorescent light with a special type of bulb) - because it shows you everything with 1 light, instead of needing to use 2, as suggested by Insider.

    But if you want to use 2 different lights- have at it - certainly nothing wrong with doing it.


    And if you look at Insider's pics, even the incandescent bulb he used is showing the wear in the same places, and even more of it on the ear -

    Insider's pic 1.JPG Insider's pic 2.JPG


    But it's showing you more of it on the ear because the angles at which the two pics were taken is slightly different. If the angles were exactly the same for both pics, you'd see wear in all the same places.

    And yes, the wear is showing as one color in 1 pic and another color in the other pic - but that is to be expected with 2 different kinds of light.

    My point is quite simple, yes a full spectrum fluorescent light will show you wear. But so will a full spectrum incandescent bulb. So there is no difference between them in that regard.

    But by Insider's own words you NEED an incandescent light to see hairlines, all of the bag marks, and other flaws - because his fluorescent light will not show you those anywhere near as well as the incandescent light does.

    So why use 2 lights when 1 will do the job ?
     
    GDJMSP, Jun 16, 2016
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  7. GDJMSP

    GDJMSP Numismatist Moderator

    And neither have I, nor did I ever say I had. What I said was that I had experimented with them, and every other type of light I could think of, including black lights, just to see what you could see with them. You see, all different kinds of lights put off different spectrums of light, and different spectrums show you different things.


    We shall have to agree to disagree on this.
     
    GDJMSP, Jun 16, 2016
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  8. Insider

    Insider Talent on loan from...

    Actually, I use a stereo microscope to examine coins and the hairlines, bagmarks, scratches, rub, and repairs are EXTREMELY EASY to see using two eyes and florescent light.

    Since most collectors do not have the luxury of the scope, its very important that they use florescent light ONLY to detect luster loss or for authentication. They'll need the incandescent light to finalize the grade. That's why they also should have both lights as I do. When I play with a new purchase, I use incandescent light to write it up and for the first look. Next, it goes under the scope. I'll look at it again using incandescent light to judge its "flash" and eye appeal.

    Probably more important is to tip and rotate the coin in whatever light you use in order to see all of its characteristics.
     
    Insider, Jun 16, 2016
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  9. Kentucky

    Kentucky Supporter! Supporter

    Doug using a black light to...ehem...experiment
    easy-rider-1969-20-g.png
     
    Kentucky, Jun 16, 2016
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