Authentic vintage sewing patterns: This is a fabulous original dress making pattern, not a copy. Because the sewing patterns are vintage and pre owned, we check each vintage sewing pattern for completeness, for the pattern pieces and the instruction sheet. Please keep in mind these are vintage patterns that may show their age not perfect in appearance but still very usable. In many cases the vintage patterns have never been used and are uncut and factory folded.
Pattern by Butterick
Pattern Number # 5506
Copyright 1960s
The pattern is: Complete
Size:   12 Bust:   34   Hip: 36

Butterick 5506; ca. 1969; MISSES’ ONE-PIECE DRESS. Semi-fitted, A-line dress with inverted V-front seaming has high front neckline with slit. Full length sleeves or sleeveless.

Featured in Butterick Home Catalog Winter 1969

Love the design, but not the size? These sites will help you with resizing :
https://www.sovintagepatterns.com/blog.asp

http://sensibility.com/blog/tips/how-to-resize-a-pattern/