67 Barracuda drivers side mirror

Hey guys my Barracuda has what looks like an aftermarket drivers side non remote chrome mirror. The mirror itself is more of a rounded rectangle shape and the base is a longer rectangular shape. The mounting holes don't match up with the usual mounting holes you see for the normal round non remote chrome mirrors. Did the 67's use a different mirror or is this an aftermarket job someone drilled an extra hole for? I've looked at several pics online but it seems like there are many different style mirrors so it's hard to figure out which is original. Thanks.