Cool find from a local estate sale! Not sure what this was used for but it has lots of potential - it could be incorporated into a large mixed media collage or used as a stencil or as wall art. It's 1/4" dense flexible rubber. It looks like it may have been used as a stencil as it has blue paint around the edges. I'll be listing other numbers and letters so stay posted! 19.5" x 10.5" I have two of these - they are very similar but you may not receive the exact one pictured here.