Uncatalogued MSA Disc Set?
 

Have any of you ever seen an MSA disc (ice cream lid?) from this set before?

http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT

I have seen one or two like this...MSA put out a few test lids that were shopped to retailers. This one, like the slurpee prototype lids, have the straw hole. They are extremely rare though.

Joshua