Read the oldometer. That's how many miles I've got on this body. Aged 46 Years. 46th Birthday gift tee for people born in 1974. Vintage Oldometer 46th Birthday Counting. Make a cool gift for your dad, mom, grandparent, friend who are turning 46 years old. Have a man turning 46 in your life? Does he love cars, racing and anything with an odometer? Then this is the perfect 46th birthday gift for him! This 46th birthday gift is perfect for dad, papa, grandpa, husband, boyfriends and any other man in your life!