Lavochkin Mars probes designators

[Paolo Ulivi]

Hi all,
sorry for not being able to write in Russian

On the Lavochkin Mars probes of the 1960-1970 I know
1M, a Mars flyby and lander, canceled in the aftermath of Mariner 4
2M, flown as the two M-69 orbiters
4M, the M-71 and M-73 probes, and a Maroskhod-carrier
5M, a Mars sample return.

Any idea of what the 3M was?

[MSS]

http://martiantime.narod.ru/History/lant1.htm
http://martiantime.narod.ru/History/lant2.htm

http://www.ufolog.nm.ru/mars0.htm

[Paolo Ulivi]

http://martiantime.narod.ru/History/lant1.htm
http://martiantime.narod.ru/History/lant2.htm

http://www.ufolog.nm.ru/mars0.htm

Thanks! That is much clearer now!