This is an antique Limoges LS & S (L Straus & Sons) porcelain celery or sandwich bowl from France.
It is in the LSS255 pattern which is white with a ribbed rim with gold gild scrolls, and pink, yellow and blue flowers. On the bottom, barely readable is LS & S Limoges France in blue and France in green.
The bowl measures 12.25" long, 5" across, and 2" deep.
Overall, it is in good pre-owned condition with a chip on the rim and wear of the gold gild.