Benrus Type 1-CType 2DTU-2A/PSea LordOrbit RobotUltra-DeepSeries #3061Heritage Classic # 12/24-hour ring# 1921# 1960s# 1970s# 24-hour scale# Cushion# Dive watches# Dual crown# Field watches# Fumé# Inner bezel# Inner timing bezel# Magnified Date# Military# Reissues# Rotating 12-hour bezel# Sellita SW 200# Skin diver# Soprod P024# Tool watches# United States# Vietnam War# Vintage