Malta AFM WO1 wrist strap badge
 

For those interested in Commonwealth insignia, here's a good starter in the rank badges section.

Armed Forces of Malta WO Class 1, a/a, on brown leather wrist strap. Originally these badges were fitted with eyelets, pins and backplate. This version has blades, folded flat as in OSD badges.

GTB

Not frequently seen, an AFM staff sgt's armlet for summer wear. Note that the RA SNCO's 'gun' arm badge is utilised, as well as a Tower in lieu of Crown.

GTB