Help Identifying 60s-70s T-Molding

I collect and restore a particular brand of guitar tube amplifiers that used this t-molding in the late 60's through the 70s. Through my research I've seen comments to the fact that this t-molding was from the auto industry which makes sense. I've spent hours googling around to see if I can find a car model from that era that uses this particular molding, with no avail. Do any of you guys recognize it? Any leads or help would be much appreciated, Thanks!