Vintage 70s zum zum gunne sax style white eyelet maxi sundress

Vintage zum zum brand dress in white eyelet with bust lacing. Item tag indicates size 5, but measurements provided and looks like size is similar to small or xs. Top is lined but bottom section is not and so is slightly sheer. Dress is in excellent condition with no stains, holes, or pilling. Fabric content unknown. Brand is zum zum but this looks very very similar to gunne sax dresses from that time. Would be beautiful for a country wedding! Please ask any questions you have before purchasing.