Yes always the POA / Enquire dilemma!
I did look at Eurospares site for Ghibli, it is illustrated as having a shaft for the button but a small drawing. Also different part number. Different p/n 115 BO66316/65855 depending on if early ‘ late chassis number.
I have some feelers out to a couple guys who might have something that will work, one being a retired Maserati restorer who converted 10 Mistrals to Spyder and kept one… he helped me find a set off NOS Carello rear light lenses.
as the Beatles song goes ‘I get by with a little help from my friends…’
will keep you guys posted
cheers
Larry