Offered is a 1950’s Sinko Bicycle Air Speed Speedometer “Flight Leader”,,, with original bracket,,,,, Works!Great mid century design,,, mounts on the handlebar and has a hole that faces foreword,,, as you pedal air enters the hole and air pressure moves the speed needle.Showing little use ,,, nothing major or distracting,,, will need 1 screw and nut to clamp it on the handlebar.Please, look through the pictures for cosmetic issues!!!Thank you for looking.