Automatic Car Identification Label

I love trains and railroads, so finding this particular piece of memorabilia was incredibly rewarding.  This is an automatic car identification label that came off of an old freight car.  It's difficult to see in the picture, but there is a number or the word 'start' or 'stop' in the bottom left corner of each colored/patterned panel:


1
STOP
1
2
6
9
2 (- suffix #)
0 (- type of unit)
1
3
6
1
START

I've done some research and the significance of the order of the panels and it seems that this "label" is an older, bigger version of a barcode, and is read from the bottom to the top.

The ACI System (courtesy of this helpful site):

 1. The first (bottom) line is the start label.

 2. The second line is the equipment code number. "0" is used for railroad-owned equipment, "1" for privately-owned equipment, and "6" is used for non-revenue equipment.

 3. Lines three, four and five are a number indicating the equipment owner, with each reporting mark given a separate number.

 4. Lines six through eleven are the car number, padded with leading zeros as necessary. On locomotives,  line six indicates the type of unit and line seven the suffix number.

 5. The stop label will be on line twelve.

 6. The last (top) line is used for the check digit. This check digit is calculated according the following formula: multiply the first digit by 1, the second by 2, the third by 4, the fourth by 8, the fifth by 16, the sixth by 32, the seventh by 64, the eighth by 128, the ninth by 256, the tenth by 512. Add the results together and divide by 11. The remainder after the last full division by 11 (0 to 10) is the validity digit.

Based off this information, I was eventually able to determine that my particular ACI label came from a privately-owned freight car on either the Union Refrigerator Transit Company (1934-1947) or the Union Refrigerator Transit Lines, a Division of the General American Transportation Corporation (1950-1970).