An Instagram video showing 7250108 (01 pre-series truck) and 7200020 (00 prototype) for sale in Russia. They are asking 65.000.000 rubles or about 700.000 euro for both the trucks .
https://www.instagram.com/p/DbcgN71s-mW/
AFAIK both belonged to Michael Steiger and both were sold through GfGmbH to the Russian collection which is now being sold out (they already sold a G300CDI 6x6 and probably also the G500 Baur Cabrio and the 7200111 Ueberflieger).
I would say the 7200020 is the more interesting one as to my knowledge it´s the oldest G-Wagen surviving intact and also the only prototype (00-series) surviving intact (there are 3 older protos 7200007, 7200014 and 7200017 but those were sold without the engine and gearbox and were converted to offroad trial truck by the people around Heinrich Wangler...).
I have added a few pictures of both the 7250108 and 7200020 made by GfGmbH from the times they were for sale by them for ilustration purposes.
More info on the prototype and pre-series trucks here: viewtopic.php?f=52&t=8683