It's the mended patch that really sold me on this flyswatter, carefully done and with the mesh square patch set an angle, making a great pattern as the two different grids overlay. The swatter itself is a pretty fun one too, shaped like an apple, outlined in red, and with a green wooden handle looped with wire twisted onto a heart at the end. I might guess 1950s or so but am not completely sure. 

24 inches long and, patch included, in very good condition, with many years of swatting left in it!