Only if you can anticipate that the value of the metal is still there in 100 years, or that the coins will be worth something as a collector's piece. Imagine i

Only if you can anticipate that the value of the metal is still there in 100 years, or that the coins will be worth something as a collector's piece. Imagine if these were aluminum, which was expensive in the 1870s... (http://www.tms.org/pubs/journals/JOM/9511/Binczewski-9511.html http://www.tms.org/pubs/journals/JOM/9511/Binczewski-9511.ht...)