Does anyone know anything about Hillerich & Bradsby bats labelled SPECIAL SERVICES, U.S. ARMY? I have had a "Rogers Hornsby model" bat with this labelling since 1984.

I found a picture of a bat that is similar in every way EXCEPT the label above "Safe Hit" on mine has the army wording listed above whereas this one simply has "U.S.".

http://www.liveauctioneers.com/s/lot-1410859.html

Does anyone have any idea what I have, what era it's from and what a general idea on its value might be?