Finds to source

The styles
Borre - the second half (early 9th to mid 10th)
Jellinge - miss the start, all the rest (late 9th to late 10th)
Mammen - first chunk (second half of 10th, early 11th C)

Broa is too early. Urnes and Ringerike are too late.

The following are finds that fit these time periods and styles, and could be relevant pieces for my craftsman to study. Some may have been buried at the time of his study, though the trial pieces or sample bone carvings could have still been in existence. The designs have a lot in common and I should have a look at them to get familiar with the elements. Might be good to see their locations on a map, with trade and raid routes marked.

b  Borre in Vestfield, Norway
b  Asen brooch
b  Rinkaby, Sweden
b  Nonnebakken, Denmark
b  Gokstad ship burial
b  Hon hoard, Norway
-  areas of Russia settled by Scandanavians show jewellery with borre style designs
-  influence of the style evident in carvings in Britain and Ireland
b  Varby, Sweden
jbm Mammen, Denmark
j  Jelling, Jutland
j influence on grave stone in York and 10th C Anglo saxon art
jb Skaill, on Orkney, Britain
j  Viking style crosses, Isle of Man
jb Traen hoard, Norway, last decade of 10th C
jm Jelling Stone to King Harold Bluetooth
m  Arnes, Norway
m  some manx crosses
m Walrus ivory casket in Brambery Cathedral (Bavarian National Museum, Munich)
m Casket with antler panels, lost in WWII
mr Sigtuna, elk antler sword guard in transitional style combining Mammen and Rigerike