I hate to tell you this, but GATX 1404 does not show up on my July 1974 Official Railway Equipment Register. 
Something existed with that number per CSX's database.
https://shipcsx.com/pub_sx_trackingpublic_jct/sx.trackingpublic/UmlerSearch GATX 1404
Tank Car
Mechanical Designation T Outside Length 061 ft 04 in
AAR Car Type Code T107 Outside Extreme Height 15 ft 00 in
Inside Length 00 ft 00 in Outside Extreme Width 10 ft 08 in
Inside Height 00 ft 00 in Height of Extreme Width 08 ft 00 in
Inside Width 00 ft 00 in Upper Eaves Height 00 ft 00 in
Side Door Height 00 ft 00 in Upper Eaves Width 00 ft 00 in
Side Door Width 00 ft 00 in Lower Eaves Height 00 ft 00 in
Side Door Type Lower Eaves Width 00 ft 00 in
Plate Clearance C Star Stencil
Compartments 1 Trans Code
Outlets Trans Cond Code
Lining Floor Trough
Roof Type Floor Strength
Draft Gear 77 Articulated
Cubic Ft Capacity Max Weight on Rail 263000 lbs.
Nominal Capacity 000000 lbs. Tare Weight 076100 lbs.
Owned Or Leased NOT CSX CAR Load Limit 186900 lbs.