These vintage blue cow ear tags are old but clean. I don't think they were ever used on cattle... they don't have enough wear for that. We've been using them to make farmhouse-style beaded garlands or ornaments for patriotic holidays and for keychains. 

Made of plastic. 

SIZE: Approximately 2" x 3 1/2"

Our current selection includes random three-digit numbers. Please email me before purchase if you're looking for a certain number -- ducttapeanddenimbyann@gmail.com