That is the larger one we have. Started on flat car #21, then moved to #14 when #21 rotted out. The larger tank rusted out, so the smaller tank was put onto flat car #14, either at Edaville or MNGRR, not sure which, because car #22 rotted.
The tank car we have was the first tank on the B&SR.
EDIT...The tank we have was the second tank to arrive at the B&SR, not the first. It arrived in 1920