Vintage dress 70s cut out open keyhole cotton midi

Vintage dress with an insane pattern and really cool cut, a late-70s piece still in great condition. Its front and back are cut the same, so it can be worn with the cut-out detail both on the front and the back. Just wow. It’s unlined and has a button closure. For an EU size 34-36 / UK size 6-8 — its waist is extra small, so please check the exact measurements!