#3 is a fantasy as well -- it predates DSN and his 6154 models.
That replica came out just prior to the first 1950 copies and uses a mix of watch model parts, it was later morphed into a a very poor version of the 1950 (very common in replicas 3-4 years back)
MM20 case but with a screw crown and the dial is taken from the 3646-6152 prototype I just mentioned in another post .. the (Soldered lug RAD) so that is a c1940s model, the movement is wrong for that model because it;s a Russian copy of Rolex movt. - the original model was a sub second and therefore ANGELUS movt, not a ROLEX ... the third funny quirk is the dual rear case with window and solid cover. the ONLY Panerai GEN ever to have this feature was the 2533 shown in the list above as #1 ... but that watch should be in a 3646 RAD case!!!
#3 is a true frankenstien monster of parts, slapped together to create a watch that never exisited except as what, 1, 2, 3, 4 different models. Which is quite an accomplishment in itself