UPDATE: Sold on eBay for $8000.

This seller calls this a M606 styled CJ-3B. It appears in good shape.

“Very nice, original unrestored 1964 Willys CJ3B in the service skin of the Vietnam war period. These jeeps (last of the Willys Flat Fenders) were sent by the hundreds to Vietnam They were not used tactically by the U.S but in security roles and staff duty vehicles in garrison around Saigon ect.
This vehicle in in very authentic configuration as the 3Bs put into service during that war.
Original condition with no rust or rust repairs ever..
The 134 F head motor powers this vehicle, transfer case and lockouts operate perfectly. There is a chipped tooth on the 1st/reverse gear that makes
a noise in 1st and reverse but does not effect the performance of the vehicle.
It has a military canvas top and windshield cover.
I am the 3rd owner, the 2nd owner was the original owners son who took possession of the vehicle only 4 years ago just before I purchased it.”