From my mum's collection, she in turn had it from my grandmother, so it is definitely pre-1974

This one is silver plated, with a fine hardwood base, on green baize.

The only marking I can see is "Silver Plated and "Made in England"

Almost certainly made in Sheffield, and almost certainly silver plating on copper (which is the norm for pierced pieces)

13cm across the base, and 11cm internally, so it should also take a 4" wide magnum bottle. The bottle of fizz shown (obviously not included) looks good in it!