Famous personalities on cover from South Georgia and the South Sandwich Islands

I received before postcard from South Georgia and the South Sandwich Islands, and now i received this beautiful cover with famous personalities. Stamps on the left are from set Ships, Scientists & Explorers Definitive (Stanley Kemp & Ernest Shackleton), issued on 5.1.2015. Stamp on the right is from set Sports on South Georgia & the South Sandwich Islands, issued on 1.8.2016.

Location of South Georgia and the South Sandwich Islands

Thank you, Li Ming!