Well, pewter uis many things....it's an alloy that may contain lead, tin, antimony, copper, bismuth. But modern pewter meant for food must contain mostly tin.
Then there's spelter which contains mostly zinc...and was widely used for lamps, statues etc.
And we have nickel silver another alloy containing copper and nickel.
Because it looks fairly new from the style, I would assume it's probably a variation of nickel silver.
Is there a mark?
Linda C