McCall's 6884 vintage sewing pattern, dated 1979. 

Designer: Bill Tice

Misses' Caftan and Tie Belt:

Caftan has gathered, dropped shoulder line, V-neck or plunging neckline, lower front slit; elastic in front waistline casing only is hooked in back. Self fabric tie belt or purchased belt slips thru side from seam openings and ties in front. 

ONE SIZE fits 6 - 20 

Pattern is UNCUT and factory folded. Envelope has wear and small holes at each corner, and a store stamp on the front.

More '70s patterns here:

http://allthepreciousthings.com/collections/1970s