Accident double exposures

Some time ago I bought a Minolta X-700 from America with all the accessories. X-tra 400 film was in the bag and I said wow, a gift! After another test tape, I inserted it and clicked. Then I forgot and kept it in the refrigerator for a couple of months. After developing, I realized that it had already been taken, and here is a double exposure! The seller wrote to me that it belonged to his father, after his death he simply sold it, knowing nothing, also without sentimentality, let her go from America to distant Georgia, Tbilisi.