Ring-money, trefoil brooches, and the gripping beasts of the north.
Norse material culture travels: oval ('tortoise') brooches worn in pairs, trefoil and disc brooches, ringed pins (an Irish-Norse favourite), Thor's hammer pendants, and hack-silver — arm-rings, ingots, and coin fragments cut and nicked for testing in a bullion economy.
Ornament styles (Borre's gripping beasts, Jellinge ribbons, Ringerike tendrils, Urnes' elegant loops) form a sequence any keen eye can learn. Weights for the bullion trade — barrel-shaped with copper-alloy shells over iron, or cubo-octahedral — are common companions to hack-silver.
Test nicks on silver edges are period behaviour, not damage — photograph them. Weigh everything silver (weight standards mattered), record ornament style honestly, and report hoard-like groups immediately; Norse-period silver is treasure-law material almost everywhere it occurs.
Recognising Bronze Age metalwork
Recognising Iron Age and Celtic metalwork
Recognising Roman military fittings
Recognising Anglo-Saxon metalwork