Cerium Advertising set
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Advertising set.
This lovely little set of rare earth oxides was made to promote the fact that rare earths really aren't very rare. Once the technology was developed to separate and purify then economically, they became quite common in fact. There is no date on this piece which is a pity, but I would guess it was made in the 1960's.
Source: SoCal (Nevada), Inc
Contributor: Theodore Gray
Acquired: 23 July, 2004
Price: $20
Size: 8"
Purity: >20%