A fake made from lead to exactly the same thickness and diameter as a genuine sovereign would be 35% lighter than the genuine coin.
His counterfeits are of such high quality that collectors will pay upwards of $1,000 for one; although a genuine coin sells for about $50,000 to $100,000.
Arousing demoralized Poles to active cooperation will require payment in genuine democratic coin.
A genuine coin of China Soviet is 8-10 times more expensive but 100 times more difficult to find than the W7 stamp set.
Many genuine coins were melted down and underweight fabrications produced from the molten metal.
"I don't know whether people who bought the coins knew the real value at the time," Mr. Kobayashi said of the genuine coins.
In some cases, a slug can be a genuine coin used in another country, with or without knowledge of the user.
There were no genuine smaller coins, so that the usual French coins (1, 2, 5 Franc) were used instead.
He told them the whole story and showed a minute mark that he had used to identify the genuine coin.
Slugs are slowed to a different degree than genuine coins, and this is used to send them into the rejection slot.