The retro beauty has timed many a dinner or cake.  It was manufactured by the Mirro Company, Manitowoc, Wisconsin.  Popular in the 70's, the timer was made in many colors.  The reminder counts down the minutes and sounds a loud single "ding" at end of cycle! No label remains. Timer is missing the three rubber feet. The timer's face is faded.  See detail in photo #3. For your vintage kitchen. Look for other Mirro items in my booth.