I can personally attest that it has existed there at least 50 years and based on the pics has been restored twice.More info on the V-1 in Indiana.
German V-1 Buzz Bomb - Wikimapia
http://www.roadsideamerica.com/tip/3123 One of only two WW II V-1 German Buzz Bombs in the U.S., Greencastle's Nazi rocket trophy is mounted on v-shaped concrete pillars, poised as if gliding into downtown. According to the Putnam County Convention and Visitors Bureau: "It came into the...wikimapia.org
V1 flying bomb in Indiana
I was out and about the country side checking of a creek to fish. I went through the town of Greencastle, Indiana and what do I see? A V1 flying bomb.forum.il2sturmovik.com