Watch List notes:

BRITISH COINS, Elizabeth II, Trial Two New Pence, no date, die pressure trial strike c.1971, on a flan of 26mm diameter, "sundial" of twelve segments with two concentric inner circles, rev "sundial" of twelve segments with annulet at centre, edge plain, 7.06g. Practically as struck with a trace of original lustre at centre both sides, toned, very rare.
from the David Sellwood collection
This piece is of the same size flan and weight as the adopted Two New Pence of 1971

Estimate: £200-250