sentences:  The versions for "25" and more engagements are of broadly the same design, but are slightly larger with a small plaque at the base of the wreath bearing the number of actions rewarded.While still issued in silver and bronze, the "25" and "50" silver versions show the tank with a black finish, with both the silver and bronze "75" and "100" badges having a gilded wreath.The "75" and "100" badges are wider, measuring 51mm by 60mm and were struck in a lightweight zinc alloy; ensuring that the larger pin did not pull inconveniently on the tunic.