Are you looking for additions to your collection of Tinplate? I have a 1936 1070E Set that Teledoc rated EXC++ back when I shared pics in 2016. Doc loved it because it has the first 1688 made with thin casting and windows from the cab looking down the running boards. Let me know if you are interested and I will send pics.That's a good question, I cannot give you a proper answer, I just know I like it. 80 plus years old and the stuff looks like new.