Tiffany Lemonade set ?

I have this lemonade set that has an inscription around the rim of the pitcher top that has the date of July 13, 1927 given out for First Place at a specific sporting event held at Westchester Country Club in Pelham,NY..they were know in the day to give out Tiffany and Cartier pieces as trophies..., I have a few of those from the same location.

Also, every piece was wrapped in a yellow cloth bags with a leather tag on each that says Tiffany & Co.New York...on the leather tag.

Several astute antique looked them over for me but could find no markings.

Might I ask you opinion ?

Thanks Very Much,

Susan