Clear Test Stems

Up for auction on eBay is a unique set of PEZ dispensers I've never seen before.  A set of five crystal Halloween PEZ with clear stems!  Very cool looking set.  The clear crystal heads and clear stems look amazing together.

Below is info from the listing:
"Clear stems have never been mass produced or been available for sale to the public. These purpose built stems are designed to allow a close inspection of the molding process and verify the integrity of the mold and spring assemblies."

Interested in owning these?  Well, you've got some competition because there currently are 10 bids and the price is $325.  Auction ends this Monday 11/24.