I got this loose and do not know anything about it.  Rally Mirror. Date code on the glass is 2HI7.  Part number stamped on the bottom of the base is  60655-401.   I think it is an after market mirror that might work on many different kinds of cars.  Glass has one dark spot, but is usable.  Glass is good and tight and ball. Base is 5 1/4 inches long at the longest point.  1 and 3/4 inches wide at the widest point.  The brackets are 3 and 3/8 inches apart. It has a really neat mounting way.... You can cut two slits and the screws expand the little arms to tighten it up.