Used Duck Stamps
Will re-scan a few of these ......They don't look so good.....
Link to US Used Duck Stamps - Page 2
RW2-on Texas License both sides
RW1-on Oklahoma License both sides
         RW2-big stamp
RW2-Part Postal Cancellation
            RW3-SE                                           RW4-light scuffing                                                RW4-SE
            RW6-SE                                                            RW9                                                       RW9
  RW8 - on California License both sides                           RW9 - Unsigned SE on Iowa License
                                             RW10-SE on Iowa License both sides shown
               RW10 SE                                                                       RW11-SE on Iowa License
            RW11                                                       RW12                                                            RW13
   RW14-on Iowa License
              RW14-on Texas License both sides
         RW14
RW14 - Postal First Day Cancel
                                                                                       RW15 - on Iowa License
RW15 - washed out signature                                  RW16
RW17 - washed out signature                                  RW17                                                        RW20
         RW21                                                          RW21                                                      RW22
             RW22                                                          RW22                                                         RW23