Vintage 60s orange midi dress retro mod mid century

Vintage 1960s or 1970s orange and white midi dress. Long sleeves with open slit detail and buttons all along. Back zipper closure, Talon brand. Daisy chain detail along the waist. No tags for brand or size but I estimate it as an XS or small based on fit and measurements. Waist: 13.5” Pit to pit: 16.25” Overall good condition. Interior stains around the collar. One spot noted on front center. All pictured. I have not tried to treat and remove any of this so it may lighten or come out. The one on the front is very faint already (final photo).