Leda Woman’s Day 1958. Woman’s Day 1958. As you can see, in 1958Â Leda was a “General Plastics product”. At some stage in the 1950s the company/product was acquired by General Plastics which was in turn acquired by Beutron. Woman’s Day, 26th May 1958. Woman’s Day with Woman, 6th October 1958. (Thanks to Carol for sharing her adverts.)