Silver by weight, not by coin. Across much of the Viking world silver circulated as bullion. Value was determined by weighing and by assessing purity, not by a stamped denomination — which is why Viking-age graves and hoards so often contain small folding balances and sets of weights. A merchant carried the means of valuation with him.

Hacksilver. To pay, you cut. A fragment was hacked off a ring, ingot, brooch or coin and weighed out to the required amount. This is why so much Viking silver survives as deliberately chopped pieces, and why an intact arm ring is comparatively rare — most were eventually spent. An arm ring is best understood as a wallet you could not easily drop.

Weight units. Rings were often made to standardised weights, commonly cited around 26.6 g for the eyrir and about 8.6 g for the ortug. Treat specific figures with some caution: standards varied by region and period, and much of the precision in popular sources is firmer than the evidence supports.

Oath rings — and a caveat. Rulers rewarded loyal retainers with silver arm rings, and Norse law codes and the Icelandic sagas describe oaths sworn on rings kept at temple altars. This is genuinely attested but the sagas were written down centuries after the events they describe, by Christian authors, so they are literary evidence about how later Icelanders imagined the pagan past as much as records of it. The ring-giving itself is on much firmer ground — "ring-giver" is a standard poetic term for a lord.

Why twisted rods. Twisting two or more rods together is faster than carving a pattern, stiffens the bar considerably, and produces a texture that reads clearly at a distance and in poor light. It also makes hacking a fragment slightly easier to do neatly. Practical, decorative and financial reasons pointing the same way is usually why a form persists.

Arms

Blueprints (2)

Celtic Bronze Armlet

Viking Silver Arm Ring