https://worldoftanks.com/en/tankopedia/3665-GB19_Sherman_Firefly/
A British version of the American M4 Sherman tank, developed in early 1944. It differed from the U.S. version by having a more powerful 17-pounder gun,...
sherman fireflyreviewcharacteristicscomparison
https://www.warhistoryonline.com/news/sherman-firefly-at-tankfest-2019.html
For the first time ever a WW2 Sherman Firefly will be running at TANKFEST 2019 This particular Sherman Firefly comes from the Bastogne Barracks in
sherman fireflyfirst timetankfest