Found this on the US government trademark website
Looks like the brand has been in use since 1925 but not registered until 1967. Since there is no registration symbol it would be older than 67.
I can see 50s too.
Word Mark OHRBACH'S
Goods and Services IC 025. US 039. G & S: LADIES', MEN'S, CHILDREN'S, AND/OR INFANTS' CLOTHING, IN ONE-, TWO-, AND THREE-PIECE GARMENTS, AND ACCESSORIES-NAMELY, SUITS, COATS, PANTS, TOPPERS, JACKETS, SLACKS, JUMPERS, DRESSES, HOUSECOATS, [ PINAFORES, ] SKIRTS, BLOUSES, SHIRTS, SWEATERS; LOUNGING AND BATH ROBES, NEGLIGEES, SLEEPWEAR, UNDERWEAR, LINGERIE, FOUNDATION GARMENTS, HOSIERY, HEADWEAR, NECKWEAR, FOOTWEAR, BEACHWEAR, SHORTS, SKIWEAR, SCARFS, HANDKERCHIEFS, [ APRONS, AND GLOVES ]. FIRST USE: 19250211. FIRST USE IN COMMERCE: 19250211
Mark Drawing Code (1) TYPED DRAWING
Serial Number 72256124
Filing Date October 10, 1966
Current Filing Basis 1A
Original Filing Basis 1A
Registration Number 0832976
Registration Date August 1, 1967
Owner (REGISTRANT) OHRBACH'S, INC. CORPORATION DELAWARE 5 W. 34TH ST. NEW YORK NEW YORK 10001
Type of Mark TRADEMARK
Register PRINCIPAL
Affidavit Text SECT 15.
Renewal 1ST RENEWAL 19870801
Live/Dead Indicator LIVE