<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 10.12.16 12:00, Martin Koppenhoefer
wrote:<br>
</div>
<blockquote
cite="mid:CABPTjTAkrSyHUi_oaNeri+BQC60iq1R2q+MYtOb20G19-O2=Yw@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-12-10 9:09 GMT+01:00 Oleksiy
Muzalyev <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:oleksiy.muzalyev@bluewin.ch"
target="_blank">oleksiy.muzalyev@bluewin.ch</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">I would also suggest
to issue ten years membership card in pure silver with a
name of a member. There are companies which produce such
metal membership cards [2]. The current price of
Sterling Silver is $14.18 per Ounce (oz), or $0.5 Per
Gram (g). Sterling silver is defined as 92.5% pure
silver (that is why there is a tiny stamp "925").<br>
<br>
One membership card from pure silver weighs 24 grams
[3]. It means the price of the precious metal itself for
one card is only $ 12.00. On this particular website a
silver membership card costs really a lot, because it is
plated with white gold and rodium. Such a plating is not
necessary in our case. </div>
</blockquote>
</div>
<br>
<br>
</div>
<div class="gmail_extra">I had a look into Osmium, unfortunately
it is very, very expensive ;-) 30gr are around 22000 EUR.<br>
</div>
<div class="gmail_extra"><br clear="all">
Depleted uranium on the other hand is very cheap but
impressively dense, almost twice the density of lead, imagine
how breathtaking it would be to issue hand engraved uranium
membership cards, given the same size I'm sure they would feel
incredibly heavy and precious. They could be delivered molten
into a glass capsule in a nice lead containment, and could be
passed on from generation to generation, surely a glimpse on
eternity (given a half-life of 4.5 billion years). I haven't
yet received the detailed prices for materials and production
but at this point I am still confident it would be competible
to your solution, and hardly beatable in uniqueness.<br>
<br>
Just some food for thought ;-)<br>
<br>
</div>
<div class="gmail_extra">On an even more serious sidetrack: if
we were to make "special" membership cards, what about a
hologram with some map stuff? Those silver plates tend to
oxidise ;-)<br>
</div>
<div class="gmail_extra">And why limit them to 10 years?<br>
<br>
</div>
<div class="gmail_extra">Cheers,<br>
</div>
<div class="gmail_extra">Martin<br>
</div>
</div>
</blockquote>
<p>Dear Martin,</p>
<p>Osmium, let alone Uranium, are extremely toxic. But silver is
used even in healthcare. It does not oxidize much. I just made a
photo of a memorial medal with the maps of Düsseldorf and Odessa
<a class="moz-txt-link-freetext" href="https://drive.google.com/open?id=0BwIBJzM0u50qX3JhUTNVRGlTRmc">https://drive.google.com/open?id=0BwIBJzM0u50qX3JhUTNVRGlTRmc</a> .
This medal, including engraved maps, is made from pure silver. I
did not touch it for several years, and it is possible to see on
the photo that it did not oxidize much. There is something about
silver what makes it precious by look and feel, and it has been so
for millenniums.<br>
</p>
<p>I think the membership card should be of the usual card format:
85.5mm x 54.0mm (3.3″ x 2.1″), thickness (approx): 0.45mm. In my
opinion, any plastic including a hologram, would just cheapen a
pure silver card. But I may err, - a lot depends on a design, on
the silversmith; perhaps a hologram may be included indeed.</p>
<p>I would not call it "special" cards, but rather just ten years
membership card. It would be obviously too difficult to pay for,
issue, and distribute such a card each year.<br>
</p>
<p>With best regards,</p>
<p>Oleksiy<br>
</p>
<p><br>
</p>
</body>
</html>