http://www.ebay.com/itm/271640985218
This vintage canvas messenger bag was made in the late 1920s-early 1930s. It is made of lightweight green canvas, now faded. It has a single button closure flap, a divided interior and a strap with a D ring adjustment At some point, the original owner, a Mr. R.G. Pease, decided that he wanted a zipper top to make the contents of the bag more secure and added a zipper top. Instead of adding a closed end zipper that you would normally use on bags, he added two separable bottomed jacket zippers, with the early grommet bottomed stopbox and double hinge, pinlock, round holed slider, folding the separable end of the zippers to the inside of the bag.