Identifying Green Glass Goblet?

Just thought I'd ask.... doubt this is anything important or even has a lot of age to it but wondered if anyone could name the maker of this vibrant green glass goblet? Not even sure it is a goblet - could be a spooner or a small vase? It is 6" tall; about 3.5" across the mouth; base is 2.5" square; 1 1/8" square in middle of stem. Appears to have "seams" up both sides until it reaches the clear neck - clear green neck views as solid circle of glass, no seam at all. Might it have any value at all if it is vintage glass?

 

I *think* it is Indiana Glass in the Mt Vernon pattern, but glass is hard for me, and I could be wrong.

 

I would look at Mt. Vernon by Indiana Glass

 

that's odd .....

edited to add:

well, it certainly isn't odd now ... but when Messi and I first answered, both of our posts were doubled.

but not now

nothing odd here ...

 

OH I just googled that and there it was!!! The exact same item - called a 12oz. Ice Tea; 1975; available in gold, olive & crystal!!!
"Indiana Glass introduced the Mt Vernon pattern in the late 1960's and continued to produce the pattern throughout the 1970's and 1980's. Mt Vernon was made in gold or amber, olive green, crystal, blue, lime satin mist and ruby stained."
THANKS

PS - Replacements dot com have the Ice Tea listed for $7.99 each So not a valuable piece but I like it.....