Unable to provide any further conditional grading outside of pictures due to lack of knowledge in stamps. Happy to provide more information by answering specific questions you may have.
These have been laid out for benefit of showing their condition as best as possible. I do collect comics and can have great respect for the condition of a collectors item. I can ensure you that the stamps were handled very carefully with no skin contact for picture display.
The item "US FEDERAL DUCK STAMP COLLECTION RW1-RW50 1934-1984 (61pcs-Duplicates, Extras)" is in sale since Sunday, November 29, 2020. This item is in the category "Stamps\United States\Back of Book\Duck Stamps". The seller is "uniformskink" and is located in Chicago, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Sweden, Indonesia, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Bahrain, Croatia, Malaysia, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.