The seller of this auction lists these as crest and seal chips. He also states that they are not old, but probably mfg. in the past 10 yrs. or so. Did they still make crest and seals that recently? It's hard to tell by the quality of the scan if these are really C&S chips.
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1132260371