Watch List notes:

(g) PF69 ULTRA CAMEO | Elizabeth II (1952-), Proof Sovereign, 1985, third head, edge milled, 8.00g, 11h (Spink SC2 [4271]), brilliant uncirculated, in Royal Mint case of issue, with Certificate of Authenticity, no. 07633, in NGC holder, graded PF69 ULTRA CAMEO (Cert. #6295122-003).
Provenance
The Lansdown Collection of Guineas and Sovereigns,
Estimate: £270 - £300