Hard to say and even with a better sample (http://1.bp.blogspot.com/-G86F3u0EtqA/T6p3PPiUXFI/AAAAAAAADFM/wcvfn7f6lY...) as it looks very generic and neutral to me.
Can't be 100% positive so here are some possibilities: Corporate S (possibly matching, filling all design specifications, the closest I have at least), Air Condensed (/S looks slightly off), Trade Gothic Condensed (#18 is probably the closest you could get, /S has horizontal stroke ends), Benton Sans (really like this one and even if the overall design looks off)