Watch List notes:

Scotland, Mary Stuart (1542-67), Half-Bawbee or Threepence, first period, Edinburgh, 0.94g, crowned thistle dividing cypher, rev. crown over voided saltire, cinquefoil below (S.5436), spots of verdigris on an otherwise good metal flan, good very fine.
Provenance
Purchased Spink, May 1977 (with ticket)
Estimate: £150 - £200