vintage presser foot, please help identify
This foot appears to go to one of my vintage machines but it's totally unfamiliar to me. It showed up on the floor today when I was going thru a pile of sewing stuff and I honestly don't have any idea where it came from. I own 3 vintage Berninas and the first New Home MemoryCraft 7500 from the later 1980s; this foot -- or part of a foot -- doesn't look familiar to those. I feel like I have a gremlin in my house, Help!