Study Guide Bava Metzia 45 Beit Shamai and Beit Hillel have a debate regarding trading maaser sheni coins from silver to gold coins. There are three versions of the debate between Rabbi Yochanan and Reish Lakish about what the basis of the debate between Rabbi Yochanan and Reish Lakish is. The first version links their debate to the issue of whether silver or gold is considered a currency or commodity com[pared to the other. However, the other two version think the issue is exclusively a maaser sheni issue and does not relate to the currency/commodity debate. Rav and Levi debate whether money can be used for a kinyan chalipin, a symbolic act of acquiring. Chalipin must be performed with an item that has inherent value. Does money have inherent value because it is made from metal or is it viewed only in terms of the image on the coin which will eventually wear away?