“…Similar units of account are noted in early medieval Spain and Ireland (where slaves also commonly appear as a standard of value), late 8th-century Frankish sources identify bread, grain, cattle and honey as units of value, while early 14th-century Norway has standard valuations expressed in butter, hides and iron (Charles-Edwards 1993, 478-85;W. Davies 2002, 160;2010, 124;Kelly 2000, 587-599;Kershaw 2017;Kershaw and Williams 2018;Kilger 2008, 270;Lunden 1999, 254;Skre 2017). The actual payment could be made in a variety of ways, many of which would leave little archaeological trace and therefore, it is suggested, attract little research attention (Gullbeck 2011, 102).…”