Greetings! I have a 13-star, machine stitched flag, perhaps a centennial commemorative piece that I know for certain has been around since the mid- to late-1800s. The material appears to be linen, the stars are double stitched on each side, and there are two metal grommets. The colors are bold, although there are some holes and tears in the flag itself. At one time, there was a stamping near the top grommet, but it's too faded to read (perhaps "Standard"). If you look closely, you can see 2x4. I would appreciate any further help with identification and value. Much thanks in advance!