Foursquare Rum Distillery Launches Mark XXIX Mandamus Rum

Corona del Mar, CA (October 20, 2025) – Foursquare, the legendary rum distillery located in Barbados, has launched Mark XXIX "Mandamus", the newest expression in the Exceptional Cask Selection (ECS) Series. The bottling is a 16-year Double Maturation Single Blended Rum aged for 10 years in Ex-Bourbon Barrels and then transferred into Ex-Port Pipes for an additional six years. This marks just the third time Master Distiller and Master Blender Richard Seale has released an ECS using Ex-Port Cask – the first being the original US release "Mark II, Port Cask Finish" (June 2014) and the second being "Mark XIV, Détente" (August 2020).

Exceptional Cask Selections represent the unique, limited, and rare offerings of Foursquare Rum Distillery which Richard Seale hand selected. They are only released when he feels they are of exceptional quality. Each is one-of-a-kind, only available for a limited time, and showcase truly unique approaches to both Rum blending and maturation.

All blending, bottling, and aging occurred entirely on-site by Richard Seale. No added color, sugar, filtration, or flavor additives. Mark XXIX Mandamus was bottled at 114 proof (57% ABV) and is available throughout the U.S. and online for the suggested retail price of $159.99.

Foursquare Rum Distillery is located on a former sugar plantation that dates back to approximately 1720, within the tiny Caribbean Island of Barbados. The distillery was re-opened by the Seale family in 1996, distilling operations and blending are currently directed by Richard Seale, 4th Generation Trader/Distiller of R.L. Seale & Co.

About Altamar Brands LLC

Founded in 2005 by W. L. Lyons Brown, III, Altamar Brands is a small, entrepreneurial outfit founded to develop and import esoteric, artisanal spirits brands that offer unique and distinctive production stories in their respective categories. They include High n' Wicked Whiskeys, Foursquare Exceptional Cask Selections Rums, Probitas Rum, R.L. Seale's 12-Year-Aged Barbados Rum, Witches' Tree Kentucky Straight Rye Whiskey, ElVelo Tequila, Kubler Absinthe, Right Gin and Lágrimas del Valle Tequila.

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