Hello,
have a look at Steelfish (Ray Larabie):
http://www.abstractfonts.com/font/3815?text=CONSTAIN
http://www.abstractfonts.com/font/9014?text=CONSTAIN
It's a free font and looks very similar but is a little bit more compressed. The shape of the T might be a hint that the original typeface (Steelfish Bold?) was streched horizontaly.
Btw: It's no Helvetica, Univers, Folio or anything similar the shape of the capital letter S differs to much.
What's the font - anybody please?