Watch List notes:

Elizabeth I (1558-1603), Portcullis Money, Testern [Eighth Dollar or Reale], 1600, Eighth Coinage, (m.m.) : ELIZABETH · D.' G.' AN · FR · HI.' REGINA ·, crowned shield of arms dividing E-R, rev. (m.m.) : POSVI · DEVM · ADIVTOREM · MEVM ·, crowned portcullis and chains, 3.39g, 2h, m.m. O (Spink 2607D; Pridmore 4, var. a; N -; Norweb II, 385 this coin), a delightful coin with a rich cabinet tone and an esteemed pedigree, good very fine, extremely rare

provenance
The Christopher Comber Collection
Norweb, Part II, Spink 48, 13 November 1985, lot 385 - £550 [Baldwin]
Acquired from Spink by exchange, 1966