Wow - that is *close*. A few differences: door sizes, vents on the bonnet sides, radiator head. Also, the Willys fenders have curved down sides, but the Iran photo car's fenders seem almost flat.
Thank you all so much for your input. Just found out some more tidbits of info on the passengers. The man in the back is Reza Shah Pahlavi (Iran's Shah from 1925 until 1941) and the driver (my grandfather) was the first person in Iran to have a driver's license.
Nick - what is "the Iranian bridge"?
Are they sure what they're describing is the same car in the photo posted here? ... how do we know the forum you quote is talking about the same car we're talking about?