I looked around, didn't seem to find anything...
We're trying to date a wreck image using freight cars in the pictures.
One (a WUF NYC&StL box) still shows "NEW 5/1907" By the CAPY/WT info (ORER info also suggests that as the build date).
Back in that era, was there a "every cars has to be reweighed every x [years/months]" requirement?
If so, what was the time period?