Antique Victorian combination napkin ring, bud vase, and condiment caddy manufactured by the Rockford Silver Plate Co. during the late 1800s.
This specific design features a central cylindrical napkin holder flanked by a tall, trumpet-shaped integrated bud vase, all resting above a footed serving tray meant to hold small inserts (such as salt, pepper, or mustard cellars). It was crafted out of "quadruple plate", a high-quality Victorian method where items were plated with four times the standard thickness of pure silver over a base white metal.

I am not very knowledgeable about these, but it appears one of the small side pieces is missing (see photos). Thanks for looking!