This listing is for one vintage McCall's women's sewing pattern #2457, size 10, bust 32 1/2", waist 24", hip 34 1/2", "Misses' Blouse or Dress and Skirt in Two Lengths, from 1970.
The envelope has seen some slight water damage along the bottom edge, but the pattern pieces and instructions inside do not appear to be harmed. Only five of the twelve pieces have been cut or used. The remainder of the pieces are uncut on the original full sheet or rough cut with wide margins. The two pieces pictured above have some damage to the edges, but it only affects the seam allowance which is 5/8".