http://www.ebay.com/itm/401043386725

This vintage shirt was made around 1936-1938 by Woolrich.  It is made from red and black plaid wool from the Woolrich Woolen Mills of Woolrich, PA and has an unusual full zipper design with a single buttonhole on the tails.  The zipper is a Talon, with sunburst stopbox, oval slider-to-pull connector and sunburst slider. In typical workshirt form, this has two buttoned breast pockets.