Part of Flight Lieutenant Ian A. 'Joe' Lyons MBE Collection. See Catalogue No. 5374P for details of his service record.RAAF dark blue peaked cap. Black cloth band around the exterior of the cap. Black vinyl chin strap around the front half of the brim. Chin strap is loose and is secured with a pin. RAAF badge on the front of the cap featuring A King's Crown with red insert over gold coloured eagle. Brown leather sweat band and clear plastic internal lining.uniform, raaf, heaadwear, ian a. 'joe' lyons, peaked cap