So this is the real deal! Park Police are only in 3 states, NY - California - Washington DC.
The other 47 states use Park Rangers. These special Police have concurrent jurisdiction with local police in these 3 States. This badge was issued to all Park Police officers after 9/11. It's the only one I have.
Had a buddy on the force years ago. The item "Vintage Obsolite Genuine Park Police 9/11 Badge Sept 11 WTC" is in sale since Thursday, October 17, 2019. This item is in the category "Collectibles\Historical Memorabilia\Police\Patches\New Jersey". The seller is "ducktheaxegrinder" and is located in Woodhaven, New York.
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, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Uruguay, Russian federation.