Okay, I admit that I don't know that this is a Crusader logo, but that's what it makes me think of. Wear it on your own personal crusade for truth, enlightenment and the Australian way!
Dimensions (LxWxH): 17mm x 20mm x 4mm (approx.)
Weight per cufflink: approx. 7g (light)
Size = x mm (W x H)