McCalls pattern 3973.
Vintage- All sales final.
Misses Blouse.
Size 12.
Bust 32.
c1956.
The pattern does appear to have been used. All the cut pieces appear to be present and the instructions are in the envelope. I have not unfolded the pattern.
Envelope shows wear from age and tear from age and being stored.
The pattern you receive is the one in the photo.