After a bit of discussion on other platforms it seems that this wheel is in fact an Original Perana steering wheel and vey rare. It has a fourth hole hidden by the leather. So lucky I didn’t throw it away.
Now to fix it by taking it to a proper alloy welder (that’s not me for sure).
I’m thinking weld the sucker back as best they can then add a doughnut welded all round.
Any thoughts welcome or advice on who to use doesn’t matter where they are as long as it’s done well. Cheers.