I found a piece of iittala, one of my favorite companies.
(http://i7.photobucket.com/albums/y283/Muscadale/TITapio.jpg)It measures only 4 inches high. My surprise came when I turned it over.
(http://i7.photobucket.com/albums/y283/Muscadale/TTapiomark.jpg)
My question is when did they use an acid stamp for signatures and when would this piece have been made. Thanks Terry.