The bowl in the image is a vintage silver-plated pedestal serving bowl with handles by Sambonet of Italy. It is marked "18-10," which refers to the high-quality stainless steel composition (18% chromium, 10% nickel) underneath the silver plating. This construction makes the piece durable and highly resistant to corrosion, a hallmark of Sambonet products used widely in the hospitality industry. 

Sambonet, founded by Giuseppe Sambonet in 1856, was the first company in Italy to establish an industrial plant for galvanic silverware production and later pioneered innovative techniques for silver-plating stainless steel. The style of your bowl is consistent with the classic and timeless designs often found in their collections.