Someone asked for historic exchange rates for copper...I thought about
using coin exchanges instead of metal, since that was the basis of the
question. So, here are some basic exchange rates:
Most of this taken from Wikipedia, with notes added by myself.
Note that in many cases there were many denominations of a coin minted
- that is, like North American cents or European centimes, there could be a
1-reales piece in Spain as well as a 4-reales and 8-reales piece (the infamous 'peso' or 'piece of eight'). Greece is another example, ranging from the Dekadrachma (10 drachmas = 60 obols) to the hemitartemorion (1/8 obol, so one dekadrachma = 480 hemitartemorions!). You can usually tell who did it most by looking at the list length. I'm only listing coins of a different name, not a different denomination.
1 livre (--) = 20 sou (gold) = 240 deniers (silver)
1 pound (--) = 20 shillings (gold) = 240 pence (silver) = 960 farthings (silver)
1 Rupee (silver) = 16 Annas (silver) = 64 Pice (copper) = 192 Pies (copper)
1 RyÃƒÆ’Ã‚Â´ (gold) = 4 Bu (gold) = 16 Shu (gold) = 50 Momme (silver) = 500 Fun (silver) = 5,000 Rin (silver) = 4 Kan (copper and yes, a Kan equals a
Bu) = 4,000 Mon (copper).
Rome (3C BC - 4C)
1 Aureus (gold) = 2 Quinarii (gold) = 25 Denarii (silver) = 50 Quinarii
(silver and yes, same name as gold Quinarii) = 100 Sestertii (bronze?) = 200 Dupondi (bronze) = 400 Asses (copper) = 800 Semisses (copper) = 1600 Quadrans (copper)
1 Escudo (gold) = 2 Pesos (aka Pieces of Eight, aka 8-Reales piece)= 16
Reales (silver) = 1024 maravedis (vellon, a low-silver alloy)
Siam (medieval Thailand)
1 Tical (silver, 15.244g) = 4 Salung (silver, 3.8g) = 8 Fuang (silver,
1.9g) = 16 Song phai (copper, 18.9g) = 32 Phai (copper, 11.3g) = 64 Att
(copper, 5.6g) = 128 Solot (copper, 2.8g)
1 Drachma (silver) = 6 Obols (silver)
1 Solidus (gold) = 2 Semissis (gold) = 3 Tremissis (gold) = 12 Milarense
(silver) = 24 Siliqua (silver) = 180 Follis (copper) = 7,200 Nummus (copper)