I got a lovely present from my friend, Cary Karp, this week. He sent me a link to this video from the Medeltidsmuseet in Stockholm with a bit of nalbinding in it. https://www.facebook.com/medeltidsmuseet/videos/3047349822025268/
The language is Swedish of course. Anna Lilliehöök gives a bit of a tour of the museum and several of the artifacts therein. At around minute 6:50, she brings out a leather sole with a nalbound fragment stitched to it. She speculates that it might be the remains of an insole or perhaps a sock/stocking to which a leather sole had been applied. She tells us that stitch used is Mammen; which is UOO/UUOO F2 in Hansen’s classification. The dating is 1300-1400 CE.
Edited to add this lovely photo taken by Cary Karp. You can even see the fine sewing thread mentioned.
Photo: Cary Karp
What I find very interesting is that the row appears to follow the edge of the leather sole. That direction under and along the arch does not match the row direction that I see in contemporaneous nalbound socks. So for now, I think I find the insole theory more plausible. Nonetheless, this is a very interesting find as it appears to have been sewn to the leather when the find was whole and new. The concept of an integral insole sewn into a leather turn-shoe is very intriguing.
For more information on the Medeltidsmuseet, their website is: https://medeltidsmuseet.stockholm.se/in-english/
You can actually tour the museum virtually through Google Maps: https://firstname.lastname@example.org,18.069453,2a,75.1y,179.65h,89.74t/data=!3m6!1e1!3m4!1sGTnLYZNksG4FqdeIL5u_zQ!2e0!7i13312!8i6656