RSC Pilot Watches Men&rsquo;s Analogue Quartz Watch with Leather Bracelet Spad XIII rsc306 RSC Historical Editions: designed by the famous Watchdesigner Ronald Steffen. The RSC306 is related to the Spad XIII. You get a folder with info about the Airplane and its flying Ace. Brushed stainless steel 316L 48mm diameter XL Case with reinforced mineral glass. High quality leather strap (4mm thick) with XL stainless steel buckle. Miyota-Citizen Quartz movement with date. 3 years warranty.