1982 JDM Seiko 7A28-7050 Speed Master “Driver” (Rotating Case),7A28-7050] Something unique for today. Seiko 7a28-7050 Speedmaster Chronograph from 1983. Designed by hall of fame car designer Giorgetto Giugiaro. Rotating case feature for better visibility while driving. : r/ Seiko,April 1983' Seiko 7A28-7050 Rotating Chronograph all original | The Watch Site,RARE! Seiko 7a28 7050 Vintage Speedmaster! - YouTube,セイコースピードマスター 7A28-7050 ビンテージ クオーツ 稼働美品,