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This GIGANTIC 1970’s 46x48mm. HEUER CALCULATOR CHRONOGRAPH with slide rule bezel is in “like new condition”. This watch retains the original HEUER pushers winding crown and all hands. The automatic caliber 12 movement sparkles after a recent clean and overhaul. The original deep blue dial with white accents and orange baton hands is in very fine shape. This example is as good as it gets.