An image with info of the Mars 3 rover can be seen here:

http://www.planetary.org/mars/images-rovers.html

The Mars 2-3 rovers were first revealed by The Planetary Society in 1990. As I recall, the Soviet scientists who described them seemed to assume the West already knew about them, which was not evident in any of the mainstream literature I read on those missions.

The Web site Raoul links from has a lot of very interesting and obscure space probe images, as does this fellow next. His pages include images of the pennants placed on Mars by Mars 2 and 3. The Soviets made a big deal out of those pennants being the first placed on Mars when it was otherwise obvious that the landers did not quite succeed.

http://mentallandscape.com/V_Venus.htm