'Coins' in the Bible

"Or suppose a woman has ten coins and loses one of them. She lights a lamp, sweeps the house, and searches carefully until she finds it, doesn't she?

He called ten of his servants and gave them ten coins. He told them, "Invest this money until I come back.'

The first servant came and said, "Sir, your coin has earned ten more coins.'

"The second servant came and said, "Your coin, sir, has earned five coins.'

"So the king told those standing nearby, "Take the coin away from him and give it to the man who has the ten coins.'

They answered him, "Sir, he already has ten coins!'

Then he saw a destitute widow drop in two small copper coins.