M151 Mirror Mount

I just picked up a 1966 M151 that has a very odd outside rear view mirror mount. The mirror is mounted on a raised area on the driver's side about the middle of the cowl. I have several M151's A1, A2's etc. but all the others mount just below the windshield on two flat pieces of metal on top of the cowl. Never seen one like this before any ideas? It was built 5-66 by Ford. THANKS!

A picture will help so we can see exactly what and how it is. It sounds very interesting.

A picture would be usefull (as) it sounds like the windshield would not fold down past it? Here is an interesting mirror position.

Here's a photo.

Very interesting....... I'v got nothing to add though. In my 30 years of playing with mutts I've never seen anything like this.

GI's do the craziest things.

It looks factory. No sign of a mirror mounted in the usual spot.

The guys over at G838.org might know it it was a factory job or some motor pool mod.

May 11th, 2015.

Except for the base stamping on the fender, it looks rather like the original mirror mount system the USMC used on the M422A1's, which were supplied by Army Ordnance Corps.....

This is interesting because I have a 66 A1 that has the mirrors in the same location. I don't remember ever seeing those mounted for A1's mounted there so I removed them.