British and Scottish Hammered Silver Coins

Henry VI (Restored, 1470-1471), Penny, York, mm. lis on obv. only, G and key by neck, rev. quatrefoil in centre, 0.74g/5h (B & W 1; N 1623; S 2088). A little small of flan and weak in places, otherwise about very fine, very rare thus £250-350