Weight of coinage

From: Michael C. Morrison 8-543-4706 (mmorrison@VNET.IBM.COM)
Date: Thu 11 Sep 1997 - 04:15:21 EEST


Robert Baumgartner wondered last week about the weights of various
coins in Genertela ... Here are my thoughts:

To generalise, assume all Lunars (Pennies) are the same. Likewise,
all Wheels are the same, and so on. I *seriously* doubt the veracity
of this assumption, but it makes for a shorter append to the digest ...

I use the following weights and sizes for these overly generalised coins:

   1 bolg = 17 grams and is about 28 mm in diameter.
   Therefore, 60 bolgs is 1 ENC.

   1 clack = 6 grams and is about 20 mm in diameter.
   Therefore, 160 clacks is 1 ENC.

   1 Lunar = 20 grams and is about 32 mm in diameter.
   Therefore, 50 Lunars is 1 ENC. (I get confused calling them Pennies ...)

   1 Wheel = 33 grams and is about 34 mm in diameter.
   Therefore, 30 Wheels is 1 ENC.

I derived these values based on a gold and silver fineness of .9 (that
means a Wheel is 90% gold and 10% something else -- in the RW it's
usually copper, in Genertela, it's probably silver. A Lunar/Penny
is 90% silver, and 10% probably copper, or maybe Gloranthan bronze).
I assumed the copper content of a clack is only 75%, with the other
25% Gloranthan bronze (in the RW, it's usually nickel). And bolgs I
assumed were 100% lead.

My size and weight ratios came from real world models. Look at 18th
century US or British coins and you'll see ...

I'm working on a nongeneralised version ... One that takes into account
the great variation within coin types. But that'll have to wait ...
Is anyone interested?

Michael
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Michael C. Morrison Santa Teresa Laboratory Phone (408)463-4706
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