Watch List notes:

Elizabeth II (1952-), gold 4-coin Sovereign portrait Set, 1957, 1983, 1986, 2004, crowned head right, engraved by Mary Gillick, Arnold Machin, Raphael Maklouf, and Ian Rank-Broadley respectively, IRB initials below for designer Ian Rank-Broadley, Latin legend and toothed border surrounding, ELIZABETH. II. DEI. GRA REGINA. FID. DEF, rev. St George and dragon right, date in exergue, B.P. to upper right of exergue for designer Benedetto Pistrucci (S.4124, SC1, SC2, SC4). The first extremely fine, the last three brilliant proof condition, in Royal Mint box with certificate of authenticity.

The Latin legend translates as "Queen Elizabeth the second, by the grace of God, Defender of the Faith."
Estimate: £1,200-1,500