On page 98 of the "Southern Railway Color Guide to Freight and Passenger Equipment" is a photo of an offset side hopper converted to coke service with a roof and square hatches. The photo was taken in August 1964. However it's stated that the car was built at ACF in 1948. It is numbered 104475 and is a LO of 2226 cuft capacity. I wondered if the built date was when the roof with square hatches was added. I thought square hatches were a bit late for any 1950's rebuilds. Thanks, George Courtney