As a follow-up, if I get out of work tonight at a decent hour, I will scan my HLC pack with the correct tax stamp to help shed some light on what I'm talking about regarding the red overprint on the tax stamp which correctly dates these packs. Unfortunately, the pack you have pictured does not have the proper tax stamp for the 1914 issued date attributed to it.
Edited to add - while this may not be the greatest photo of what I'm talking about, if you look at the HLC pack I have pictured in the scan here:
http://www.baseballandtobacco.com/t227.htm or here:
http://www.baseballandtobacco.com/t205.htm, you will see the bold red overprinting on the top of the tax stamp where the glare is.