Stuart Weitzman (2014-2021, pencil drawn stiletto and initialed SW on reverse).
<noindex>https://www.sothebys.com/en/buy/auction/202...lack-on-magenta</noindex>
On June 17 2014, famed shoe designer Stuart Weitzman purchased the British Guiana for $9,480,000 at Sotheby’s New York. Weitzman added the eighth mark to the verso of the British Guiana, following the precedent set by all previous owners of the past one hundred and forty-three years.
On June 8 2021, the world’s longest established rare stamp dealer Stanley Gibbons purchased the stamp for $8,307,000.
<noindex>https://www.1c-magenta.com/</noindex>