Such happy things, I couldn't resist them. Not very old, but made with a lot of love--and with the rainbow eraser heart putting a stamp on that! Perfectly wonky but also perfectly useful, and they have indeed been used. (I'm including a photo from the seller demonstrating that!) With the backs showing the labels from the variety of erasers from which they were carved. And with a few rainbow eraser carved letters, too, shown in later photo.  

Number stamps approx 1 1/2 to 1 5/8" tall x 1" w. All pictured included. All in very good condition.