Sraffa biographical query

[Daniel Davies <dsquared@xxxxxxxxxxxxxxxx>]

Sorry to bother the list, but can anybody help me out on what might be an
urban myth?

Basically, is it true that Sraffa bought Japanese bonds the day after
Hiroshima in anticipation of making a big profit?  Specifically, does anyone
know if this anecdote of heartless economists is true, or whether he
actually bought the bonds after the war during Japanese reconstruction?  The
second one seems more plausible to me, but the first appears to be
consensus - it's on the New School biography page for him and Wikipedia for
example.

thanks
dd