This book was certified as FN (6.0). The reason I believe is because somebody wrote his name on the cover as well as a number left of his name. There is also a small piece of the front cover on the bottom left that is missing. The first photo shows that. Beyond that the pages are certified white.
I believe this book would have been at least an 8.0 without those 2 issues. A fantastic golden age comic with only 2 flaws. The item "1944 DC Comics Action Comics #75 CGC graded 6.0" is in sale since Monday, June 10, 2019. This item is in the category "Collectibles\Comics\Golden Age (1938-55)\Superhero".The seller is "berniehoff12" and is located in Tucson, Arizona. 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, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, 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, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Bolivia, Ecuador, Egypt, Jordan, Sri lanka, Nicaragua, Oman, Peru, Viet nam, Uruguay, Russian federation.