I am pretty sure that the 1956 Truck Shop Manual has a reference/image for a code on the frame. I showed that documentation/Shop Manual to the NC DMV inspector when he mistakenly told me that a code was placed on the frame in 1954 - he was incorrect and he was interested in seeing the documentation (he sent photos of the documentation to Raleigh).
Tim,
I checked my 1956 Truck Shop Manual Supplement and didn't find any info or pictures of the frame serial numbers. I'd love to see what you sent to the DMV if you can dig it up.
Mike B
