The Helvetica Con BQ is a condensed i.e. narrower version of the Helvetica BQ font. The Helvetica Con BQ Bold is a bold version of this font. It can be used where you need to highlight or emphasize some points and save space at the same time.
It is ideal for the copy of print advertisements and also for signage. It is part of the Helvetica family that originated in Switzerland, and later took over the entire world, and now it is even present on the new dollar bills. The Helvetica Con BQ Bold font is just a variation of the original Helvetica.
Check out: Free Helvetica Font: Helvetica Two