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BROOCH
Unique ID: SF-5BDC05
Object type certainty: Certain
Workflow
status: Published 
A copper-alloy possibly Roman disc brooch, dating to AD 150-250. The centre of the disc has an openwork decoration depicting a circular sequence of crescent-shaped perforations. On the front face, the centre of the decoration has an engraved ring-and-dot mark. The rim left by the opework has a slightly bevelled edge and has a sequence of oblique short grooves on the front; the sequence alternates a thin and shallow groove to a larger and deeper one. The front face bears traces of silvering. The back face has a hooked catch-plate set on the back of the rim and parallel to it; on the opposite side there is a double lug which has a fragment of the corroded iron pin. The double lug largely covered by iron corrosion. The catch plate has traces of silvering.
An exact parallel has not been found, but WILT-DB9737 is broadly similar. Also see Mackreth (2011, Vol. 2, p. 118, plate 115, no. 14340) for comparison. It may be associated with a military context.
Diameter: 29.37 mm, thickness: 2.43 mm, thickness with catch-plate: 13.88 mm, weight: 8.04g.
Class:
disc with openwork decoration
Sub class: Mackreth 2011, Chapter 7, Part 2, PL CONT, Type 7, PLATE 115
Subsequent actions
Subsequent action after recording: Returned to finder
Chronology
Broad period: ROMAN
Period from: ROMAN
Period to: ROMAN
Date from: Circa AD 150
Date to: Circa AD 250
Dimensions and weight
Quantity: 1
Thickness: 2.43 mm
Weight: 8.04 g
Diameter: 29.37 mm
Discovery dates
Date(s) of discovery: Sunday 20th May 2018
Personal details
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Materials and construction
Primary material: Copper alloy
Decoration style: Openwork
Completeness: Incomplete
Surface Treatment: White metal coated
Spatial metadata
Region: Eastern (European Region)County or Unitary authority: Suffolk (County)
District: Suffolk Coastal (District)
To be known as: Hacheston
Spatial coordinates
Grid reference source: From finder
Unmasked grid reference accurate to a 10 metre square.
References cited
No references cited so far.
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