The listing, USA #1592 1977 People's Right to Petition..., shiny gum mint has ended.
USA stamp part of the Bicentennial definitives series
Year: 1977
Catalog # 1592
Condition: full gum, mint never hinged, post office fresh
Note: this is the "shiny" gum version, there is a separate lot for the "dull" gum version
I have several of these 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/