McCall's 2876 vintage sewing pattern, dated 1986.  

Misses' Blouse:

Front buttoned blouse with collar has self-lined back yoke with forward shoulder seams, front and back gathers, shoulder pads, long or short sleeves with gathered caps, shirttail hemline and machine-stitched hem. View A, B or C has long sleeves gathered into buttoned cuffs. View D or E has short sleeves gathered into cuffs. View A has ribbon trim. View B or C has ruffling. View C or D has patch pockets.  

Size   16 18 20:

Bust   38 40 42 inches  / 97 102 107 cm

Waist 30 32 34 Inches / 76 81 87 cm

Hip     40 42 44 Inches / 102 107 112 cm

Pattern is cut to size 20 and checked complete. Envelope is in good vintage condition.

More '80s patterns here:

https://allthepreciousthings.com/collections/1980s