Hey GeneD14... Beautiful tractors! My dad and his brothers were an Allis Chalmers dealer in Minnesota. I was about 14 when the D17 IV arrived on the lot. I just loved that tractor. A few years later when I farmed my grandfather's farm to pay my way through college, I had the opportunity to purchase a used D17 IV with factory three point hitch. I farmed for two years with it and traded it in on a new Oliver 1655. I wish I had kept that D17. A few years ago I purchased an Allis Chalmers 175 diesel with 505 hours on it. It's a dandy, but I still long for that D17. The 185 is actually a better tractor. The live PTO out shines the 175/D17 PTO system.
I also own a '57 AC D14 w/factory power steering (less than 2000 hours), a '54 AC WD45 sold originally by my father's company, a '38 un-styled WC and a '74 AC 620 with multiple attachments. Someday I hope to get them all restored and looking like your tractors. For now they are all working tractors, except the WC, on my pretend to be a farmer Minnesota farmland.
Go Allis Chalmers!