i bought a dalton lot 4 lathe. says lot 4 on end of bed left on the right says #4065. on the gear cover says model b. change gears are held on with pins... the lathe is nice and tight i have it reassembled (h it had to carry it down the steps it is covered with saw dust , it looks cared for and i will clean it off ,oil it and run it later to day..
tony z

I also just obtained a Dalton lathe, lot 4 #4004 built not too long before your #4065 I think. Philip