That's a pretty desirable hub, being a Morrow/Eclipse 36-10. It may have a letter-number date code somewhere on it like J2, but this dating started in 1931. No date code could signify pre-31 and that stamping does appear to be earlier. It could have been an earlier motored application, but by the time Whizzers came out, forebrakes were standard practice.
The axle sliding out likely means that the threads are severely stripped and needs new bearing races or a new axle.