Base upon the article "ReWeigh Dates on Freight Cars" by Tony Thompson (https://drive.google.com/file/d/0Bz_ctrHrDz4wOWM4YzU5MGYtMTdjNC00MmQwLWEyZDgtMjJiMDUzMTZhMmZm/view)
I have started to add this detail to applicable cars on my HO B&O Shenandoah SD set in late September 1956. The majority of my cars will fall in the 48 month catagory as described at the end of his article and also in Table 1. How steadfast was this rule? Would you see some cars say 3 months beyond the 48 months not done?