The French link doesn't work for me Brian but Fulvia hub tools used on the outer castellated nuts loosely speaking were 3 prong for S1 (both front and back), 6 prong for S2 onward (both front and back). There was at least one intermediate variation for an early S2 rear hub nut*, the later (common) type being the stronger on re-use. I remember the massively sturdy drum-type hub puller that Harry had was a necessity sometimes if bearing the housing had overheated/corroded/distorted (invariably the front) but it was unusual. Harry's friend Ken used to knock them up for customers at very reasonable prices back then.
*and the tool required subtly different.
Thanks for the information Chris,
Can understand the need for the hub tool as Omicron had one devil of a job getting my nearside front bearing out even with a lot of heat applied.
no idea why the link won't work for you
Brian
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