Yes, it's a soup plate. Fabulous, likely Sevres, though unsigned so we'll say simply that it is Old Paris which is the catch-all designation for the approximately 2/3 of the Sevres & Vincennes porcelain plates that went unsigned, but remain today a testament to the artists who peopled those communities of France and populated the porcelain factories of each which bear the name of those villes or suburbs of Paris. The plate you see here is as large as a dinner or place plate, and is the standard French form for soup service. Hand painted florals in each of the 3 cartouche are further ornamented with the requisite raised impasto gold enamels, making the plates positively shimmer on your table or in your display cabinet. Unusual to find the soup plate, it's one you'll certainly wish to add to your collection.
Very good condition, age considered. The plate has very light evidence of age and use but has no chips or cracks, no hairlines. Well represented in our images, it's fabulous!