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SEM

SEM/EDS – Scanning-electron microscopy with energy-dispersive X-ray spectroscopy; reveals alloy composition and casting temperatures on mould residues.

Lead-isotope analysis

Lead-isotope analysis (LIA) – Geochemical technique comparing lead signatures in metal residues to ore sources; tracks whether Scotch Corner pellets drew on Pennine galena or southern bullion stocks.

Dere Street

Dere Street – Roman road (later A1 corridor) linking York to the northern frontier. Serves as conduit for craftsmen, bullion and technological ideas between southern Oppida and Brigantian territory.

Corieltavi

Corieltavi – East Midlands tribe, whose Old Sleaford mint produced mixed tray assemblages; coin types show lighter gold and innovative silver units.

Catuvellauni

Catuvellauni – Powerful Late Iron-Age polity centred on Hertfordshire. Its rulers (Tasciovanos, Cunobelin) issued inscribed coinage and may have exported moneyers northward along Dere Street.

Oppidum

Oppidum – Large pre-Roman enclosed town (e.g., Verulamium, Braughing–Puckeridge) where specialist minting, craft and trade activity cluster. Also used to describe large Iron Age defended sites or population centres. Often very large (≥ 20 ha) late Iron-Age fortified towns with timber-framed stone walls, gateways, street plans and specialist quarters. Found in Central & Western Europe, …

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Debased silver unit

Debased silver unit – Low-gold, high-copper coin struck c. AD 20–60 in south-eastern Britain; trays such as the Scotch Corner form facilitated their bulk production.

Stater

Stater / quarter-stater – High-value Late Iron-Age coins derived from Gallo-Belgic prototypes. Gold staters (~5–6 g) and smaller quarter staters circulate mainly south of the Humber but are rare imports farther north.

Flan

Flan – Coin blank produced by hammering or reheating a Pellet; final thickness and weight control the denomination of the struck coin.

Pellet

Pellet – Hemispherical metal slug cast in a mould pit; weighs c. 0.15–0.35 g depending on tray type. Pellets are flattened into flans before die-striking.

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