The Dodo Tee was manufactured by Diadem Mfg Co in Fitchburg, Massachusetts. It's unique, patented design allowed for it to be used on cement, clay or turf and the box brags about their ability to make a good stroke perfect, as well as preventing the tee from leaving the ground and getting lost.
There are three enclosed tees, with the largest one having "DODO" printed on it. The patented cut out in the tee is by design and is meant to face the direction of your drive. The tees are in great condition while the box shows some wear, namely the top flap is no longer connected to the box itself. "The better the players, the more they like it" says the box! How would you like them?!
These tees are shown in the back right area of the group image.