I hadn't really 'clocked' this fellah - although of course I've seen Django many times, and plenty of other films he's been in. Weird really - so I was thinking - well, he can't have that sort of distinctive 'look' that many other supporty-spag folk have... I was thinking of those particularly spag-ugly phizogs of Jose Manuel Martin, Lorenzo Robledo, and of course my fave - Sir Ricky Boido. 8)
So I goggled the book on amazon and saw that Sir Federico himself has written the foreword to this book.
And it starts "Two actors who look so much alike..."
So that told me!
Anyway, thanks BsA/Soren, and to make amends I've ordered the book (only 3 and a half quid including postage from ebay)