Vintage 50's-60's gold dress with overskirt

This is a stunning vintage gold 2 piece dress with removable overskirt. Wear them together or separately! Has a low Peter pan collar, high waist and side zip. It's unlined. There aren't any tags, this appears to be home sewn by an experienced seamstress. I estimate this to be a size 8-10. Fabric unknown; I ironed it on low with no issue. Only a tiny hole in right armpit in the seam which could be easily mended. Measurements laid flat: armpit to armpit:16.5", waist-14", shoulder seam to hem-45".