In ancient Sumerian times, a m'na was a unit of weight; but talents and shekels had not yet been introduced. 1/60 talents and also 60 shekels.

Evidence from Ugarit indicates that a mina was equivalent to fifty shekels. The prophet Ezekiel refers to a mina ('maneh' in the King James Version) as sixty shekels.
Jesus Christ tells the "parable of the ten Minas" in the New Testament book of Luke - chapter 19:11-27.

Since the Akkadian period, 2 m'na was equal to 1 sila of water (cf. clepsydra, water clock).

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Notes

Note, that the word "mine", in the sense of land mine came from the form of this ancient weight stone.