antique iron louvered register grate wall vent, arts & crafts vintage mission style arched window shape

Late 1800s or early 1900s antique iron wall vent with arched window shape and heavy iron louvers. We so seldom find these in the arched shape!

Size is 11 1/2" x 7 3/4" overall, and condition is very good, without chips or cracks. There's some light surface rust and old stove blacking and paint spots to the metal, we haven't touched it.