Excellent large antique pair of pierced silver plated newest on copper bottle coasters

These wine bottle coasters are unmarked but are very well cast in silver plated copper. They probably date from around the 1920's. They are in very good used condition with the copper showing though on the pierced highlights (see pics) with turned wooden bases and green velvet on their undersides. Each has an external diameter of 14.3cm, any bottle placed inside must be 10.5cm or less. newest