Circa 1910 - note T trucks, hook coupler, blue interior (also known to come in green).

Circa 1910-11 - This one was never stamped with the rivet detail - it's totally smooth. Note this one has blue interior with green base.

Circa 1911 with T trucks and hook couplers

Bottom of 1910-11 Limitied Vestible Express Tender showing washers with rivets that hold trucks in place