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syzygy

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Posts posted by syzygy

  1. The one from India appears to a 1927 to 1928 Travencore Chuckram. (From my world coin book.)

     

    Thanks for the Travencore tip - that made it easy to look up in my Krauss, but now I'm confused. I see km#43 and km#49 as possibilities. There is only one picture for both (presumably this is for km#43). There is slight difference in the characters at 7:00 on my coin (maybe that means it is km#49, but again no pic). KM#49 is listed as ND 1906-1935. Do you have an identifying number in your world coin book?

  2. Got two needed additions to my off center memorial lincoln year set from Lost Dutchman! The 1963 is a beauty. The other one is rough and a little hard to read but I pretty much agree that it is a 1960 as labelled. I went through my lincolns looking at the positions of the numerals on all the 60s dates and 1960 fits the best - agree?

     

    1963ocdg9.jpg

     

     

     

    1960ocxl4.jpg

     

    1960cuzo0.jpg

     

  3. It's been a while since I have had any new acquisitions. So I stopped off at a local shop and picked up a few interesting pieces - these are from the 6/1.00 bin.

     

    A nice 1944-S Centavo with a lot of red remaining.

    1944s1centavolw9.jpg

     

    My first coin from Jordan. One of these days I have to start putting together a country collection.

    jordanbt0.jpg

     

    Lots of luster on this one.

    1973pesewaym9.jpg

     

    Don't know what this one is - obviously damaged but interesting - guess I will be searching Krauss.

    1914unkvu9.jpg

     

    From India I believe.

    indieunkim5.jpg

  4. Not coins but notes. Picked this up at the non-profit used book store for $1...

     

    donlonbookaoz7.jpg

     

    I don't collect notes and know very little about them, but this is loaded with some nice pictures and info.

     

    One day I would like to get this note as a complement to the Bison coins.

    donlonbook2aq6.jpg

     

    I don't imagine I could get these 1979 prices though...*sigh*

  5. Surface conductivity measurements anyone?

     

    How do you suggest that "Surface conductivity" be measured? Using a decent Ohm meter, I can not distinguish copper from copper-plated from potentially brass plated - all give readings near .1 on the lowest scale, as I would expect.

     

    Did a little bit of digging and ccg's memory is correct as Ken Porter's site sells some of these and shows a letter from the mint acknowledging that zinc can be inadvertantly dissolved in the copper plating rendering such a color (link here).

     

    CopperCoins says that there is virtually no way to distinguish a brass-plated cent from one that has miscolored due to other contaminants.

     

    Certainly there is a way of detecting the content of the plating, but I do not have easy access to any destructive flame mass spectroscopy whatchyamhiggie.

     

    I shall keep thinking about this.

  6. If I remember correctly, there are some "brass" zinc'ers that are the result of zinc getting into the copper for plating, resulting in a brass plating.

     

    Hmm interesting possibility - I wonder if there is a way to definitively tell if that is the case with this coin.

  7. Searched some cents today. I didn't specifically buy rolls to search but my cent coffee can was overflowing, so I rolled a few. Looked at a bit over 800 cents and found:

     

    183 copper and 600 zinc.

    Two coppers were wheaties (1955 & 1958-D).

    Out of 30 1982s (D and P), 28 were copper.

     

    Found a couple of filled mint marks and the only other notable find was a very brassy looking zincoln - shown here next to a typical 1994. Caught my eye right away.

    1994comparisonwz4.jpg

     

    Weight, however, is right on target with the zincoln (2.46 gms). Maybe I will do a specific gravity test, but I think it is just a zincoln that, somehow, got a weird color.

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