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GRENADE
Unique ID: NLM-669B53
Object type certainty: Certain
Workflow
status: Awaiting validation 
Copper alloy hand grenade filler caps. A pair of discoid objects, both of diameter c.33mm and thickness c.12mm, with a screw thread of four or five turns close to their flat external face below a ribbed or fluted circumference, and with three internal rebates - in one case a circular screw-threaded hole of diameter 5.5mm flanked by rectangular cut-outs, in the other a similar central hole flanked by smaller (5mm diameter) blind round holes. These plugs would usually survive the explosion of a grenade in one piece, while the iron casing was intended to disintegrate as shrapnel. The use of a discriminator setting by a detectorist will usually mean that only the filler cap will be found. They may indicate the use of the area for military training, probably during the Second World War. Suggested date: Modern, 1939-1945.
Subsequent actions
Subsequent action after recording: Returned to finder
Chronology
Broad period: MODERN
Period from: MODERN
Period to: MODERN
Date from: Exactly AD 1939
Date to: Exactly AD 1945
Dimensions and weight
Quantity: 1
Thickness: 12 mm
Diameter: 33 mm
Discovery dates
Date(s) of discovery: Tuesday 10th September 2013
Personal details
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Other reference numbers
Other reference: NLM23514a
Materials and construction
Spatial metadata
Region: East Midlands (European Region)County or Unitary authority: Lincolnshire (County)
District: East Lindsey (District)
Parish or ward: Ulceby with Fordington (Civil Parish)
Spatial coordinates
4 Figure: TF4172
Four figure Latitude: 53.22633546
Four figure longitude: 0.11069259
1:25K map: TF4172
1:10K map: TF47SW
Grid reference source: Generated from computer mapping software
Unmasked grid reference accurate to a 100 metre square.
References cited
No references cited so far.
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Timeline of associated dates
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