C***hacker Thanks for the reply. That sort of stamping is often done by hand, especially in short runs. Its the sort of thing we leant to do in metalwork at school & much of the grooving on the face looks quite crude & hand done to me.
Not sure whether the steel shaft is original, though it probably is. Steel shafts started to be used around 1900. though it was only by 1931 that they started to become more common. It is TrueTemper Profit R.
It might or might not be collectable even if post 1931. But it does make me feel easier about using it occasionally if the whim takes me.
Actually, I would be quite relieved if it were not worth too much, as I inherited it from my Grandfather & would be lothed to be even to think about selling it.