This bag is RARE and TRUE VINTAGE from 1960's and made by well known English brand DOLPHIN.
HEAVY DUTY BAG WITH THICK LEATHER. Weight is about 6 lbs.
Bag's condition is VERY GOOD with OBVIOUS signs of use. I will rate it 8 / 10. Bag is about 80 years old and it is in amazingly preserved condition.

ALL LEATHER BAG with the exception of  two interior vinyl dividers.
  
Exterior- several scratches and scuffs here and there. Grained leather is thick and is in excellent supple condition. Corners well preserved and protected with brass protectors. All stitches are intact. No tears, No holes.
ATTENTION: IN THE LAST 4 PHOTOS I TRIED TO CAPTURE SCRATCHES HERE AND THERE ......
Interior- pristine and odorless. Partially unlined, just beautiful raw leather. The rest lined with the sturdy fabriq.3 large compartments with no pockets. NICELY SPACIOUS !!!!!!!
Ergonomic leather handle - sturdy and very clean.
Solid brass hardware. Mid-century English lock is functional and comes with the working key and brass chain. 
Dimensions: 17" W X 12.5" H X 6" D expanded.
RARE AND NOSTALGIC ENGLISH BRIEFCASE FOR MODERN STYLISH PROFESSIONAL.
Thank you.