This is an early vintage Carhartt overall button made of brass and featuring the distinctive heart-shaped design. The button was originally used on Carhartt workwear and is a desirable piece for collectors of vintage denim, workwear history, and garment hardware. THIS IS A VERY RARE VARIATION. I LOOKED ALL OVER TO FIND ANOTHER WITH CARHARTTS UNDER THE HEART AND WAS UNABLE TO FIND ANY!!!!!!