That's Crafty Dinky Stencil 3"X4.75" - Arched Window
That's Crafty-Dinky Stencil. The design on this stencil is specifically scaled to size making it ideal for smaller craft projects but can also be used on larger projects. This package contains one 4-3/4x3 inch plastic stencil. Comes in a variety of designs. Each sold separately. Imported.