Here is a Simplicity Pattern # 7607 UNCUT Misses Blouse--a size 12--circa 1986. A front tucked blouse with back button closing has forward shoulder seams. View 1 or 2 has collar band (View 1 has a double collar.) Long sleeves with buttoned cuffs. View 3 with button trim has 3/4 length sleeves with French cuffs.
Bust 34 inches
Waist 26 1/2 inches
The pattern and instructions are still factory folded. The envelope shows some wear from storage and age.