Where it Kentucky? Time for a road trip LOL.
I would be very surprised to see a Bernina - remember the sewing machines in that thrift store were bought new 20-50 years ago. Bernina is a brand for very well off ladies, as far as i know. (I have never seen a thrift store bernina around here, lol) I would look for the very best Singers: 15-91, 201, featherweight, etc.