Farthing Downs Boss:
https://www.youtube.com/watch?v=0EM6rppFODo&t=56s

Anglo-Saxon folded boss page 32:
shields_Archaeologia_Monograph_110_London_Society_of_Antiquaries_of_London_1992" target="_blank">https://www.academia.edu/477692/Early_Anglo_Saxon_shields_Archaeologia_Monograph_110_London_Society_of_Antiquaries_of_London_1992

Folded bosses from Hellegard:
https://www.academia.edu/110425263/Helleg%C3%A5rd_En_sydfynsk_gravplads_fra_%C3%A6ldre_jernalder_med_v%C3%A6rkt%C3%B8j_og_v%C3%A5ben