Medieval: Wool, right sides together: running stitch seam, raw edges turned under together and overcast. [Hägg 1984, Hedeby (northern Germany), (11)]
I was pleased to see this because this is the exact seam treatment I've chosen to construct my Hedeby-inspired dress. Granted, I chose the method because the pattern I was using required me to use very small seams if I was to succeed in making a garment I could wear at all. But I was pleased to see that I chose a construction seam that the original garment that the Hedeby fragment came from probably used.