Model/type: Bi-compax ChronographDate: c.1950Movement: Manual-winding, LanderonDial: Silvered, blue outer tachymeter scale, red telemeter scale, inner minute scale, subsidiary dials for running seconds and chronograph minutes, blued leaf hands, blued centre chronograph seconds handCase: Stainless steel, fixed plain bezel, rectangular chronograph pushers, snap-on caseback, numbered '321443'Strap: Later replacement, generic brown leather, gilt-metal tang buckleSize: 36mmAccompaniments: None