public void Merge(Currency addition)
{
TenLbGoldBar += addition.TenLbGoldBar;
FiveLbGoldBar += addition.FiveLbGoldBar;
TwoLbGoldBar += addition.TwoLbGoldBar;
OneLbGoldBar += addition.OneLbGoldBar;
TenLbSilverBar += addition.TenLbSilverBar;
FiveLbSilverBar += addition.FiveLbSilverBar;
TwoLbSilverBar += addition.TwoLbSilverBar;
OneLbSilverBar += addition.OneLbSilverBar;
PlatinumCoins += addition.PlatinumCoins;
GoldCoins += addition.GoldCoins;
ElectrumCoins += addition.ElectrumCoins;
SilverCoins += addition.SilverCoins;
CopperCoins += addition.CopperCoins;
Gems.AddRange(addition.Gems);
}