I had a Combat Armor Badge, regretably stolen, that was exactly as you describe. It was not official and I used it as a desk ornament.
Several years ago, in "Armor' magazine, the sergeant major of the Armor School proposed an expert and combat armor badge. It was an ungainly thing and died a deserved death.
Perhaps if you contact the magazine, they can send you a back issue.
James B. Ronan II
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