Butterick 4770 vintage sewing pattern, ca 1960s.
Misses' Evening Dress in Two Lengths:
Slim dress with cut-away armholes gathered onto bias turn-over collar. Optional purchased belt.
Bust 32 1/2 inches
Waist 24 inches
Hip 34 inches
Pattern is cut and complete. Envelope is yellowed, has a tear.
More '60s patterns here: