Here's an air medal I bought, for review. It is slot brooch, and in a wooden coffin case. Oddly, the thread that sews the ribbon to the slot brooch is white, and all those I've seen before are blue to match the ribbon. A blacklight test reveals the white thread glows brightly, so I suspect this is alas a resewn ribbon. Hopefully the medal itself is still WW2 and not just transferred to a slot brooch configuration.