Medieval Large 'Thames' Bone Pin Group 15th century A.D. or earlier. A group of two large bone pins each composed of a plano-convex body with tapering profile and circular piercing through the head. 28.5 grams total, 13-16.5 cm (5 1/8 - 6 1/2 in.). Found on the Thames foreshore, London, UK. Acquired on the UK antiques market between 1974-1985. Albert Ward collection (part 4), Essex, UK. [2, No Reserve]