Hi Imho,It looks like you have a ddo-? Possibly ddo-007? It is difficult to tell because I cannot see liberty very well. Check here... http://www.varietyvista.com/01b LC Doubled Dies Vol 2/DDO 1972.htm
Sorry Was looking at the 72p at the time as well,lol http://www.varietyvista.com/01b LC Doubled Dies Vol 2/DDO 1972-D.htm