  Small wafers.
These are the smallest silicon wafers I've seen, and each one is carefully measured and labeled. They are polished on one side but not etched, and the foam packing is crumbling: The claimed 1960's origin is consistent with the condition of the foam.
Source: eBay seller danfuboco
Contributor: Theodore Gray
Acquired: 3 September, 2004
Price: $25
Size: 1.5"
Purity: 99.99%
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