Alessi Tendentse 100% vase  

answer
guss
The 100% Make Up vases for Alessi Tendentse marked with an X are artist proofs (this was the marking as opposed to the typical AP mark). These pieces appear to be the last units that Alessi sold. I purchased a few from the Alessi basement (they were not big sellers) in SOHO (they are now long gone).
My acquaintance, John, at Minima Design (not an advertisement or suggestion to buy) purchased the remaining pieces at the same SOHO location. These will give you an example of pricing.
http://minimadesign.com/gallery.asp?gallery=Rare+Alessi