The 41 axle still has its ratio tag (43/8=5.375). (The 25 did, too, shown below. The 27 and 44 did not.) Also in this picture is a code 9-65. I don't know what it means. The 41 is also visible.
This one is the 25. The code at the bottom is totally illegible.
I can't see any date stampings on the axles where http://www.cj3a.info/tech/datecode.html says they should be. There is a "6" stamped on one of the "donuts" referred to in that page, but it's in a bigger font.