single 19th century antique american interior residential ornamental cast brass "geometric" pattern doorknob rosette designed and fabricated by f.c. linde & co., cresskill, nj. the decorative rosette retains a partially intact baked black enameled inlay used to accentuate the casting detail. the collar or thimble remains in great shape. very little, if any, wear to the casting detail. only one available. measures 2 inches in diameter.