Mid Century Modern Nesting Tables by Bertha Schaefer for Singer and Sons. Circa 1950s

Vintage Mid Century Modern Nesting Tables by Bertha Schaefer for Singer and Sons. Circa 1950s
Feature a set of 4 round folding tables that slide underneath a rectangular side table with a quintessential sleek Mid Century Modern Design.
I good condition with signs of wear consistent with age and history. The tops of the tables seen to have been refinished .Please see close up pictures for details.
Dimensions:
Rounds tables
Diameter 16.5″ x H 23″
Side Table:
W 24″ x D 17.5″ x H 24″