A set of early steel saddlebags

I found these in a storage locker and am trying to find out anything about them. I've searched dozens of sites to no avail, I was hoping someone could help me out. Info:
5"w x 15"l x 12"h. Heavy steel construction. Twistlock bayonet style top mounted latch. Turn signal lamps are 'Yankee'. Has 3 mounting holes on outside panel, and 4 more in bottom of pan. White paint appears orig. Black & Orange pinstripeing matches Harley colors (guy who had locker also had a Harley pool cue?). No makers info anywhere I can find. Friends say likely pre-war, as glass & leather were becoming more popular. Some also said that the twistlocks may indicate european design. Cany anyone point me in the right direction?
Thanks.

SOLVED - Thanks to The Zen Hut in Point Arena, CA. Found out they are 1968 - 1973 era Type 1 Moto Guzzi saddlebags. Much Appreciated.
Chris