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COIN
Unique ID: IOW-9B670D
Object type certainty: Certain
Workflow
status: Awaiting validation 
A complete, worn and revalued post-Medieval Potuguese silver tostão probably of João III (1521-1557) or Sebastião I (1557-1578), counterstamped with the figure '120'. This was a revaluation of existing circulating coins in February 1642 under João IV ('O Restaurador', 1640-1656), by which the silver was increased by 20%.
Obverse: [ ]GAIS (probably); Crowned square shield, illegible letter to left, letter (possibly B) below trefoill to right
Reverse: [ ]NO (or G)[ ]; Voided cross potent with possible symbols in angles. Counterstamped with figure '120' in one angle
Diameter: 28.1mm. Weight: 6.83g
Find of note status
This is a find of note and has been designated: County / local importance
Subsequent actions
Current location of find: finder
Subsequent action after recording: Returned to finder
Chronology
Broad period: POST MEDIEVAL
Subperiod from: Early
Period from: POST MEDIEVAL
Subperiod to: Early
Period to: POST MEDIEVAL
Date from: Exactly AD 1521
Date to: Exactly AD 1578
Dimensions and weight
Quantity: 1
Weight: 6.83 g
Diameter: 28.1 mm
Discovery dates
Date(s) of discovery: Sunday 3rd May 2015 - Sunday 3rd May 2015
Personal details
This information is restricted for your access level.
Other reference numbers
Other reference: IOW2015-5-45
Materials and construction
Primary material: Silver
Manufacture method: Struck or hammered
Completeness: Complete
Coin data (numismatics)
Denomination: Tostão
Ruler/issuer: John III of Portugal
Type: silver coin the post-medieval Kings of Portugal
Obverse description: Crowned square shield, illegible letter to left, letter (possibly B) below trefoill to right
Obverse inscription: [ ]GAIS (probably)
Reverse description: Voided cross potent with possible symbols in angles. Counterstamped with figure '120' in one angle
Reverse inscription: [ ]NO (or G)[ ]
Degree of wear: Extremely worn: poor
Coin references
No coin references available.
Spatial metadata
Region: South East (European Region)County or Unitary authority: Isle of Wight (Unitary Authority)
District: Isle of Wight (Unitary Authority)
To be known as: Isle of Wight
Spatial coordinates
Grid reference source: Generated from computer mapping software
Unmasked grid reference accurate to a 1 metre square.
References cited
No references cited so far.
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Timeline of associated dates
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