This reproduction brooch is based on a small number of Mammen-style brooches found in England. Three rectangular brooches of this type are known from Linwood, Lincolnshire, West Stow Heath, Suffolk, and Bergh Apton, Norfolk, with further examples found in Cambridgeshire and East Anglia in 2015 and 2016. It is a type which has Carolingian-inspired shapes and Scandinavian decoration, which seem to have been produced in the Danelaw, and was an accessory for women who wore Scandinavian dress.

Scandinavian brooches came in a variety of sizes and shapes which included disc, trefoil, lozenge, equal-armed, and oval shapes. The different brooch types served a variety of functions in Scandinavian female dress with oval brooches typically being used as shoulder clasps for apron-type dresses and the rest being used to secure an outer garment to an inner shift. Anglo-Saxon brooches do not match this diversity of form with large disc brooches being typical of ninth century dress styles with smaller ones becoming more popular in the later ninth and tenth centuries. However, since disc brooches were used by both Anglo-Saxon and Scandinavian women they are distinguished by their morphology. Scandinavian brooches were typically domed with a hollow back while Anglo-Saxon brooches were usually flat. Moreover, Anglo-Saxon brooches were worn singly without accompanying accessories.