Pattern: "Amherst Japan" — a famous Imari-style (blue, rust-red, and gold) with the pagoda, flowering peony jar, and scrolling vines

• Maker: Minton (and later Charles Meigh & Son copied it) — both Staffordshire potteries

• Date: c.1835-1845 — the "Stone China" body and that exact script "No 824" backstamp are documented on Minton pieces from the mid-1830s

• Your shape: pierced-handle bread-and-butter / cake plate (sometimes called a "dessert dish") — about 10½" long tip-to-tip, which matches your ruler photo

Charles Meigh also made it around 1840 — Christie's sold a Charles Meigh & Son 'Amherst Japan' part service "circa 1840, impressed and printed marks".

The word "Japan" in the 1830s meant "in the Japanese taste" (Imari colors), not made in Japan.

Condition notes from your photos

• No big chips — the pierced handles are intact (that's the weak spot)

• Light overall crazing and some brown staining in the crazing, especially near the pagoda — typical for 180-year-old stone china

• Gilt on the handles is worn to about 40% (see your close-up of the left handle)

• A few tiny rim frits on the scalloped edge, but no cracks

All normal for a piece that old and still very displayable.