These are the neat chrome emblems that many dealers would attach (drill and screw) to the trunks of new cars before they were delivered. The job of installing emblems was often left to a lot boy who applied a minimum of precision, so emblems were occasionally crooked. This really annoyed folks who resented holes being drilled into their new cars or advertising for their dealer. As cars changed hands the emblems were removed, body shops were employed to fill the holes and paint the trunk lids and eventually the practice evolved to plastic emblems, with double stick tape or decals. It's been years since I've been aware of any dealer following the old practice of drilling holes.