The listing, USA #1410-1413 1970 Save Our Cities/Air/Soil/Water mint has ended.
USA block of 4 stamps commemorating Saving Our Air / Cities / Soil / Water
Year: 1970
Catalog # 1410-1413
Condition: full gum, mint never hinged, post office fresh
I have several of these blocks of 4 stamps, all identical, the scan is representative of what you will receive.
My general terms for stamp-related Listia lots can be found here (please read, it answers a lot of basic questions):
http://listiarules.webs.com/