I did find a group and part number for the interior rear view mirror. Listed in a Parts Price List Chevrolet book, dated January 2, 1942. Group 16.068 Part number 598779 at a cost of .80 cents each. This manual is for miltary 1/2 ton (4 x 2 ) cabs and Suburban Models. Book G-27. In all of my search, I can only find this. You all may be right. I have been looking for something that was not available to the public. I do have about 4 different interior mirrors, and was attempting to match one to a factory setup. Still interested in any photos of what may be out there. Looking for consistancy. Thanks