Chips under argon. 
Greg thought I since I have such a big page about sodium, I should actually have some *shiny* sodium, not oxidized stuff under oil.  So he sent a nice pair of vials with bright sodium under argon.  Nice guy, eh?  He sells lots of very unusual elements on eBay and elsewhere: Check the Source link for details. 
Source: Greg P 
Contributor: Greg P 
Acquired: 1 May, 2003 
Price: Donated 
Size: 1" 
Purity: 99.9%
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