New website, listing items slowly and regularly.. THE 2022 PLATINUM JUBILEE SILVER PROOF SOVEREIGN DATE-STAMPS LIMITED EDITION 500 SET ONLY.This DateStamp issue features the Silver Sovereign issued by the Isle of Man and struck from. 999 Pure Silver to a Proof Finish. Each Silver Sovereign features a brand new, specially commissioned design, paying tribute to Her Majesty's Platinum Jubilee. Each coin comes protectively sealed in a tamper-proof numismatic capsule with its own unique serial number so you can register it online to receive your official DateStampT registration certificate. Because of the special one-day-only postmark, just 500 of these issues will ever be made available. County of Issue: Isle of Man.