According to this it would be from 1953 or later.
http://www.tmfile.com/mark/?q=716539319
Basic Information
Actual Characters of Mark TextSAKSTWEED
Mark Physical CharacteristicsTypeset: Word(s)/ letter(s)/ number(s)
Trademark Current Status
Expired
Trademark Current Status Date1995-05-01
Renewal Date1974-07-27
Registration Number
593028
Registration Date1954-07-27
Serial Number
71653931
Trademark Application Filing Date1953-09-29
Mark Classification
Primary Classification Code 039
Mark First Use Anywhere:1953-07-16
Mark First Use in Commerce:1953-07-29
Class Status:Expired
Class Status Date:1995-05-01
International Class:
Clothing (25);
Prior U.S. Class:Clothing (039);
Classification Statement:Women's misses',and children's coats, suits, dresses, jackets, outer shorts, outer skirts, slacks, blouses, outer shirts, blazers, ski pants, ski jackets, bathing suits, beach coats, raincoats, and hats
Mark Owner Information
Owning Party Type:Original Registrant
Owner Name:
SAKS & COMPANY
Legal Entity Type:Corporation
Address:611 5TH AVE., NEW YORK, NY
Prosecution History Events
Event DateEvent Description
1995-05-01Expired sec. 9
1974-07-27Registered and renewed (first renewal - 20 yrs)
I have this lovely vintage wool suit from Saks. The style seems 1940s to me but I am not quite sure as I have never seen this label before and research turns up nothing so far. Does anyone have any thoughts regarding date? 
