Princess Joan Commemorative Coin


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This coin is the third official silver commemorative coin issue authorised by Sealand’s Treasury since 2012. It is struck to proof quality by the Tower Mint, UK, at their facilities in London. The commemorative coin is designed by Michael Alexander whose obverse design includes a detailed portrait of Princess Joan facing to the left which is based on an official photograph taken in 2001 by Mr Alexander on the occasion of the Principality’s 35th anniversary of independence. The text included around the portrait reads “JOAN SOVEREIGN PRINCESS OF SEALAND 1967 – 2016 E MARE LIBERTAS” (From the Sea, Freedom), the Principality’s official motto.

The reverse side includes a full-colour illustration of mimosas, a favourite flower of the Princess which are arranged to resemble the shape of a crest or coat of arms. The Princess’ crown design is located above the mimosas, and a small black bow is placed below the arrangement. The text above the crest reads: “PRINCIPALITY OF SEALAND” and the coin’s denomination of “25 DOLLARS” is just under the issuing authority. The text below the crest reads: “REQUISCAT IN PACE 1929 – 2016” (Rest in Peace) The initials of the designer “MAA” is placed beside the primary design to the right.


Denomination Metal Weight Diameter Quality Mintage limit
25 Dollars .925 fine silver 28 grams 38.6 mm. Proof & colour *300 pieces


The coin was authorised on the 10th March 2018, on the second anniversary of the passing of the sovereign Princess, and will go into production from the 20th November 2018. Each coin is individually encapsulated and presented in a custom black leatherette case imprinted with the Principality’s crest on the top cover. As with the previous 2012 silver coin issued in memory of Prince Roy and the 2017 silver coin issued to observe the 50thanniversary of Sealand’s independence, the commemorative coin will be individually numbered from 001 to 300 and hallmarked which is applied on a flat portion of the coin’s reeded edge using laser technology. A numbered certificate of authenticity corresponding to the coin’s actual number will be included. Sealand’s collector coins are retailed directly by the treasury of Sealand and orders can now be placed with dispatch & delivery commencing from December.

*Please note, the Princess Joan memorial coin is strictly limited to a mintage of up to 300 pieces with sales expected to be higher than previous coins due to the coin’s first-ever colour reverse design issued by Sealand’s Treasury.

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