Pattern or Trial striking of obverse die for a Crown, struck in lead on a smaller thick flan, by Benedetto Pistrucci, incusely inscribed laureate bust facing left, similar to preceding coin, in the form of a brockage, a small letter s at start of legend, another s on it's side above first G, three more s's above tip of truncation in field, traces of toothed border, rev. blank, edge, plain (L&S 202), some light marks, otherwise practically as struck, of the highest rarity