What is the S/N? As with the #70 pull scraper, there were two models of #60 pull scraper .. the first model had a S/N prefix of 1DXXX and was 6.0 yds struck/7.5 yds heaped .. and the later model (from 1952) had a S/N prefix of 2WXXX and was 6.0 yds struck/8.0 yds heaped.
In 1958, the #60 had another increase in capacity to 7.0 yds struck/9.0 yds heaped.
There were also smaller original tire sizes (14.00x20 front & 16.00x20 rear) and later model larger tire sizes (14.00x21 front & 16.00 x 21 rear).
There were also 8" side extensions available that took capacity of the later model to 8.3 yds struck/10.5 yds heaped.
The later model #60 weighed 13,500 lbs .. the early model #60 weighed 12,300lbs.