The pictures I have seen of the cylinder heads for the 14 series have shown numerous little radiating fractures as well as one or two "decent" sized ones; so, I'm not sure that ten wouldn't be out of the ballpark when you count the "little" ones.
On that car (a really desirable one; you lucky devil
), if I got hold of a 17 numbered head, I'd do a valve job just for the sense of finality over the looong haul. FWIW.
It sounds like he isn't perfect, but at least he seems to be moving in the right direction (towards completion
).