Guide price on Alfa gt 1300 junior

[Rogt3r]

As title suggests I have the chance to buy a 1967 Alfa 105 series GT 1300 junior,it is originally an italian car but has lived its whole life in South Africa.
I'm told it's running and solid but will need restoring,paint,interior,mechanicals etc.
I know it is difficult but a guide to What would be a fair price ??
Any advice is welcome

Thanks Roger